149115431 has 2 divisors, whose sum is σ = 149115432. Its totient is φ = 149115430.

The previous prime is 149115427. The next prime is 149115437. The reversal of 149115431 is 134511941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149115431 - 2² = 149115427 is a prime.

It is a super-2 number, since 2×149115431² = 44470823524631522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149115394 and 149115403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149115437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74557715 + 74557716.

It is an arithmetic number, because the mean of its divisors is an integer number (74557716).

Almost surely, 2^149115431 is an apocalyptic number.

149115431 is a deficient number, since it is larger than the sum of its proper divisors (1).

149115431 is an equidigital number, since it uses as much as digits as its factorization.

149115431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 29.

The square root of 149115431 is about 12211.2829383321. The cubic root of 149115431 is about 530.2827860785.

The spelling of 149115431 in words is "one hundred forty-nine million, one hundred fifteen thousand, four hundred thirty-one".