151256431 has 4 divisors (see below), whose sum is σ = 156472200. Its totient is φ = 146040664.

The previous prime is 151256423. The next prime is 151256437. The reversal of 151256431 is 134652151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151256431 - 2³ = 151256423 is a prime.

It is a super-2 number, since 2×151256431² = 45757015837715522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151256431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151256437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2607841 + ... + 2607898.

It is an arithmetic number, because the mean of its divisors is an integer number (39118050).

Almost surely, 2^151256431 is an apocalyptic number.

151256431 is a deficient number, since it is larger than the sum of its proper divisors (5215769).

151256431 is an equidigital number, since it uses as much as digits as its factorization.

151256431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5215768.

The product of its digits is 3600, while the sum is 28.

The square root of 151256431 is about 12298.6353307999. The cubic root of 151256431 is about 532.8086696680.

The spelling of 151256431 in words is "one hundred fifty-one million, two hundred fifty-six thousand, four hundred thirty-one".