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310145149 is a prime number
BaseRepresentation
bin10010011111000…
…111000001111101
3210121121000011101
4102133013001331
51113344121044
650435253101
710454122156
oct2237070175
9717530141
10310145149
1114a083706
1287a4a191
134c340752
142d29492d
151c364cd4
hex127c707d

310145149 has 2 divisors, whose sum is σ = 310145150. Its totient is φ = 310145148.

The previous prime is 310145083. The next prime is 310145191. The reversal of 310145149 is 941541013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164942649 + 145202500 = 12843^2 + 12050^2 .

It is a cyclic number.

It is not a de Polignac number, because 310145149 - 217 = 310014077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (310149149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155072574 + 155072575.

It is an arithmetic number, because the mean of its divisors is an integer number (155072575).

Almost surely, 2310145149 is an apocalyptic number.

It is an amenable number.

310145149 is a deficient number, since it is larger than the sum of its proper divisors (1).

310145149 is an equidigital number, since it uses as much as digits as its factorization.

310145149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 310145149 is about 17610.9383338878. The cubic root of 310145149 is about 676.8955581739.

It can be divided in two parts, 31014 and 5149, that added together give a palindrome (36163).

The spelling of 310145149 in words is "three hundred ten million, one hundred forty-five thousand, one hundred forty-nine".