231021010 has 16 divisors (see below), whose sum is σ = 453641472. Its totient is φ = 84007600.

The previous prime is 231020963. The next prime is 231021023. The reversal of 231021010 is 10120132.

231021010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231021010² = 106741414122840200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049986 + ... + 1050205.

It is an arithmetic number, because the mean of its divisors is an integer number (28352592).

Almost surely, 2^231021010 is an apocalyptic number.

231021010 is a deficient number, since it is larger than the sum of its proper divisors (222620462).

231021010 is a wasteful number, since it uses less digits than its factorization.

231021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100209.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 231021010 is about 15199.3753161109. The cubic root of 231021010 is about 613.5978455666.

Adding to 231021010 its reverse (10120132), we get a palindrome (241141142).

The spelling of 231021010 in words is "two hundred thirty-one million, twenty-one thousand, ten".