901631233 has 4 divisors (see below), whose sum is σ = 901696068. Its totient is φ = 901566400.

The previous prime is 901631219. The next prime is 901631239. The reversal of 901631233 is 332136109.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 299566864 + 602064369 = 17308^2 + 24537^2 .

It is a cyclic number.

It is not a de Polignac number, because 901631233 - 2²⁵ = 868076801 is a prime.

It is a super-2 number, since 2×901631233² = 1625877760642200578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901631239) 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, 2116 + ... + 42517.

It is an arithmetic number, because the mean of its divisors is an integer number (225424017).

Almost surely, 2^901631233 is an apocalyptic number.

It is an amenable number.

901631233 is a deficient number, since it is larger than the sum of its proper divisors (64835).

901631233 is a wasteful number, since it uses less digits than its factorization.

901631233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64834.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 901631233 is about 30027.1749087389. The cubic root of 901631233 is about 966.0723429712.

The spelling of 901631233 in words is "nine hundred one million, six hundred thirty-one thousand, two hundred thirty-three".