31002020021002 has 8 divisors (see below), whose sum is σ = 48106582791300. Its totient is φ = 14966492423904.

The previous prime is 31002020020999. The next prime is 31002020021003. The reversal of 31002020021002 is 20012002020013.

It can be written as a sum of positive squares in 2 ways, for example, as 29819670426121 + 1182349594881 = 5460739^2 + 1087359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31002020021002² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31002020021003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267258793227 + ... + 267258793342.

Almost surely, 2^{31002020021002} is an apocalyptic number.

31002020021002 is a deficient number, since it is larger than the sum of its proper divisors (17104562770298).

31002020021002 is a wasteful number, since it uses less digits than its factorization.

31002020021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534517586600.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 31002020021002 its reverse (20012002020013), we get a palindrome (51014022041015).

The spelling of 31002020021002 in words is "thirty-one trillion, two billion, twenty million, twenty-one thousand, two".