31113122010 has 16 divisors (see below), whose sum is σ = 74671492896. Its totient is φ = 8296832528.

The previous prime is 31113121969. The next prime is 31113122017. The reversal of 31113122010 is 1022131113.

It is a happy number.

It is a super-2 number, since 2×31113122010² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (31113122017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518552004 + ... + 518552063.

It is an arithmetic number, because the mean of its divisors is an integer number (4666968306).

Almost surely, 2^31113122010 is an apocalyptic number.

31113122010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31113122010 is an abundant number, since it is smaller than the sum of its proper divisors (43558370886).

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

31113122010 is a wasteful number, since it uses less digits than its factorization.

31113122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037104077.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31113122010 its reverse (1022131113), we get a palindrome (32135253123).

The spelling of 31113122010 in words is "thirty-one billion, one hundred thirteen million, one hundred twenty-two thousand, ten".