155141431 has 2 divisors, whose sum is σ = 155141432. Its totient is φ = 155141430.

The previous prime is 155141423. The next prime is 155141521. The reversal of 155141431 is 134141551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155141431 - 2³ = 155141423 is a prime.

It is a super-2 number, since 2×155141431² = 48137727225455522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155141396 and 155141405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155141411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77570715 + 77570716.

It is an arithmetic number, because the mean of its divisors is an integer number (77570716).

Almost surely, 2^155141431 is an apocalyptic number.

155141431 is a deficient number, since it is larger than the sum of its proper divisors (1).

155141431 is an equidigital number, since it uses as much as digits as its factorization.

155141431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 155141431 is about 12455.5783085331. The cubic root of 155141431 is about 537.3318670809.

Adding to 155141431 its reverse (134141551), we get a palindrome (289282982).

The spelling of 155141431 in words is "one hundred fifty-five million, one hundred forty-one thousand, four hundred thirty-one".