31422031020 has 72 divisors (see below), whose sum is σ = 95424922320. Its totient is φ = 8369412480.

The previous prime is 31422030967. The next prime is 31422031027. The reversal of 31422031020 is 2013022413.

31422031020 is a `hidden beast` number, since 314 + 2 + 20 + 310 + 20 = 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 = 31422030984 and 31422031002.

It is not an unprimeable number, because it can be changed into a prime (31422031027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53010 + ... + 256230.

Almost surely, 2^31422031020 is an apocalyptic number.

31422031020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31422031020 is an abundant number, since it is smaller than the sum of its proper divisors (64002891300).

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

31422031020 is a wasteful number, since it uses less digits than its factorization.

31422031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204095 (or 204090 counting only the distinct ones).

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

Adding to 31422031020 its reverse (2013022413), we get a palindrome (33435053433).

The spelling of 31422031020 in words is "thirty-one billion, four hundred twenty-two million, thirty-one thousand, twenty".