9011256431 has 4 divisors (see below), whose sum is σ = 9037077000. Its totient is φ = 8985435864.

The previous prime is 9011256413. The next prime is 9011256433. The reversal of 9011256431 is 1346521109.

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 9011256431 - 2⁶ = 9011256367 is a prime.

It is a super-2 number, since 2×9011256431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9011256433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12909761 + ... + 12910458.

It is an arithmetic number, because the mean of its divisors is an integer number (2259269250).

Almost surely, 2^9011256431 is an apocalyptic number.

9011256431 is a deficient number, since it is larger than the sum of its proper divisors (25820569).

9011256431 is a wasteful number, since it uses less digits than its factorization.

9011256431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25820568.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 9011256431 is about 94927.6378669563. The cubic root of 9011256431 is about 2080.9506588023.

The spelling of 9011256431 in words is "nine billion, eleven million, two hundred fifty-six thousand, four hundred thirty-one".