31330113112020 has 24 divisors (see below), whose sum is σ = 87724316713824. Its totient is φ = 8354696829856.

The previous prime is 31330113112019. The next prime is 31330113112021. The reversal of 31330113112020 is 2021131103313.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31330113112019) and next prime (31330113112021).

It is a super-2 number, since 2×31330113112020² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330113112021) 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, 261084275874 + ... + 261084275993.

It is an arithmetic number, because the mean of its divisors is an integer number (3655179863076).

Almost surely, 2^{31330113112020} is an apocalyptic number.

31330113112020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31330113112020 is an abundant number, since it is smaller than the sum of its proper divisors (56394203601804).

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

31330113112020 is a wasteful number, since it uses less digits than its factorization.

31330113112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522168551879 (or 522168551877 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31330113112020 its reverse (2021131103313), we get a palindrome (33351244215333).

The spelling of 31330113112020 in words is "thirty-one trillion, three hundred thirty billion, one hundred thirteen million, one hundred twelve thousand, twenty".