1000311157 has 2 divisors, whose sum is σ = 1000311158. Its totient is φ = 1000311156.

The previous prime is 1000311097. The next prime is 1000311167. The reversal of 1000311157 is 7511130001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 955675396 + 44635761 = 30914^2 + 6681^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000311157 - 2²³ = 991922549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000311167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500155578 + 500155579.

It is an arithmetic number, because the mean of its divisors is an integer number (500155579).

Almost surely, 2^1000311157 is an apocalyptic number.

It is an amenable number.

1000311157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000311157 is an equidigital number, since it uses as much as digits as its factorization.

1000311157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105, while the sum is 19.

The square root of 1000311157 is about 31627.6960431834. The cubic root of 1000311157 is about 1000.1037082442.

Adding to 1000311157 its reverse (7511130001), we get a palindrome (8511441158).

The spelling of 1000311157 in words is "one billion, three hundred eleven thousand, one hundred fifty-seven".