901873231 has 4 divisors (see below), whose sum is σ = 1030712272. Its totient is φ = 773034192.

The previous prime is 901873211. The next prime is 901873241. The reversal of 901873231 is 132378109.

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

It is not a de Polignac number, because 901873231 - 2²¹ = 899776079 is a prime.

It is a super-2 number, since 2×901873231² = 1626750649588758722, which 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 (901873211) 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, 64419510 + ... + 64419523.

It is an arithmetic number, because the mean of its divisors is an integer number (257678068).

Almost surely, 2^901873231 is an apocalyptic number.

901873231 is a deficient number, since it is larger than the sum of its proper divisors (128839041).

901873231 is a wasteful number, since it uses less digits than its factorization.

901873231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128839040.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 901873231 is about 30031.2042882066. The cubic root of 901873231 is about 966.1587665752.

The spelling of 901873231 in words is "nine hundred one million, eight hundred seventy-three thousand, two hundred thirty-one".