31022020001 has 16 divisors (see below), whose sum is σ = 37155062400. Its totient is φ = 25871635440.

The previous prime is 31022019961. The next prime is 31022020021. The reversal of 31022020001 is 10002022013.

It is a happy number.

It is not a de Polignac number, because 31022020001 - 2²² = 31017825697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31022020021) 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, 1209515 + ... + 1234896.

It is an arithmetic number, because the mean of its divisors is an integer number (2322191400).

Almost surely, 2^31022020001 is an apocalyptic number.

It is an amenable number.

31022020001 is a deficient number, since it is larger than the sum of its proper divisors (6133042399).

31022020001 is an equidigital number, since it uses as much as digits as its factorization.

31022020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444469 (or 2444455 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 31022020001 its reverse (10002022013), we get a palindrome (41024042014).

The spelling of 31022020001 in words is "thirty-one billion, twenty-two million, twenty thousand, one".