31131201010 has 192 divisors, whose sum is σ = 72516487680. Its totient is φ = 9409720320.

The previous prime is 31131200999. The next prime is 31131201011. The reversal of 31131201010 is 1010213113.

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 (31131201011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35335770 + ... + 35336650.

It is an arithmetic number, because the mean of its divisors is an integer number (377690040).

Almost surely, 2^31131201010 is an apocalyptic number.

31131201010 is an abundant number, since it is smaller than the sum of its proper divisors (41385286670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31131201010 is a wasteful number, since it uses less digits than its factorization.

31131201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31131201010 its reverse (1010213113), we get a palindrome (32141414123).

The spelling of 31131201010 in words is "thirty-one billion, one hundred thirty-one million, two hundred one thousand, ten".