31143000022020 has 96 divisors (see below), whose sum is σ = 96909864387840. Its totient is φ = 8303040207360.

The previous prime is 31143000022019. The next prime is 31143000022067. The reversal of 31143000022020 is 2022000034113.

31143000022020 is a `hidden beast` number, since 3 + 11 + 430 + 0 + 0 + 0 + 220 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31143000021984 and 31143000022002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3558712 + ... + 8657391.

It is an arithmetic number, because the mean of its divisors is an integer number (1009477754040).

Almost surely, 2^{31143000022020} is an apocalyptic number.

31143000022020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31143000022020 is an abundant number, since it is smaller than the sum of its proper divisors (65766864365820).

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

31143000022020 is a wasteful number, since it uses less digits than its factorization.

31143000022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12220842 (or 12220834 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31143000022020 its reverse (2022000034113), we get a palindrome (33165000056133).

The spelling of 31143000022020 in words is "thirty-one trillion, one hundred forty-three billion, twenty-two thousand, twenty".