901231031 has 4 divisors (see below), whose sum is σ = 906627792. Its totient is φ = 895834272.

The previous prime is 901231021. The next prime is 901231033. The reversal of 901231031 is 130132109.

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 901231031 - 2¹⁴ = 901214647 is a prime.

It is a super-2 number, since 2×901231031² = 1624434742474645922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 901230994 and 901231012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901231033) 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, 2698130 + ... + 2698463.

It is an arithmetic number, because the mean of its divisors is an integer number (226656948).

Almost surely, 2^901231031 is an apocalyptic number.

901231031 is a deficient number, since it is larger than the sum of its proper divisors (5396761).

901231031 is a wasteful number, since it uses less digits than its factorization.

901231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396760.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 901231031 is about 30020.5101722139. The cubic root of 901231031 is about 965.9293867800.

The spelling of 901231031 in words is "nine hundred one million, two hundred thirty-one thousand, thirty-one".