231020202010 has 32 divisors (see below), whose sum is σ = 447883751952. Its totient is φ = 85288343040.

The previous prime is 231020201987. The next prime is 231020202013. The reversal of 231020202010 is 10202020132.

It can be written as a sum of positive squares in 8 ways, for example, as 76049644441 + 154970557569 = 275771^2 + 393663^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (231020202013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888070 + ... + 1118350.

Almost surely, 2^231020202010 is an apocalyptic number.

231020202010 is a deficient number, since it is larger than the sum of its proper divisors (216863549942).

231020202010 is a wasteful number, since it uses less digits than its factorization.

231020202010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238018.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 231020202010 its reverse (10202020132), we get a palindrome (241222222142).

The spelling of 231020202010 in words is "two hundred thirty-one billion, twenty million, two hundred two thousand, ten".