31220021113002 has 12 divisors (see below), whose sum is σ = 67643379078210. Its totient is φ = 10406673704328.

The previous prime is 31220021112989. The next prime is 31220021113027. The reversal of 31220021113002 is 20031112002213.

31220021113002 is a `hidden beast` number, since 31 + 220 + 0 + 2 + 111 + 300 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28299644307081 + 2920376805921 = 5319741^2 + 1708911^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1734445617389 = 31220021113002 / (3 + 1 + 2 + 2 + 0 + 0 + 2 + 1 + 1 + 1 + 3 + 0 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 867222808677 + ... + 867222808712.

Almost surely, 2^{31220021113002} is an apocalyptic number.

31220021113002 is an abundant number, since it is smaller than the sum of its proper divisors (36423357965208).

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

31220021113002 is a wasteful number, since it uses less digits than its factorization.

31220021113002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734445617397 (or 1734445617394 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31220021113002 its reverse (20031112002213), we get a palindrome (51251133115215).

The spelling of 31220021113002 in words is "thirty-one trillion, two hundred twenty billion, twenty-one million, one hundred thirteen thousand, two".