31411122020 has 48 divisors (see below), whose sum is σ = 69887866608. Its totient is φ = 11817861120.

The previous prime is 31411122019. The next prime is 31411122023. The reversal of 31411122020 is 2022111413.

It can be written as a sum of positive squares in 8 ways, for example, as 4575440164 + 26835681856 = 67642^2 + 163816^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 31411122020.

It is not an unprimeable number, because it can be changed into a prime (31411122023) 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, 522644 + ... + 579636.

It is an arithmetic number, because the mean of its divisors is an integer number (1455997221).

Almost surely, 2^31411122020 is an apocalyptic number.

It is an amenable number.

31411122020 is an abundant number, since it is smaller than the sum of its proper divisors (38476744588).

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

31411122020 is a wasteful number, since it uses less digits than its factorization.

31411122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58640 (or 58638 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31411122020 its reverse (2022111413), we get a palindrome (33433233433).

The spelling of 31411122020 in words is "thirty-one billion, four hundred eleven million, one hundred twenty-two thousand, twenty".