402230020031 has 6 divisors (see below), whose sum is σ = 467900227440. Its totient is φ = 344768588556.

The previous prime is 402230020019. The next prime is 402230020063. The reversal of 402230020031 is 130020032204.

It is not a de Polignac number, because 402230020031 - 2¹⁰ = 402230019007 is a prime.

It is a super-2 number, since 2×402230020031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402230019991 and 402230020009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402230020001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4104387911 + ... + 4104388008.

It is an arithmetic number, because the mean of its divisors is an integer number (77983371240).

Almost surely, 2^402230020031 is an apocalyptic number.

402230020031 is a deficient number, since it is larger than the sum of its proper divisors (65670207409).

402230020031 is an equidigital number, since it uses as much as digits as its factorization.

402230020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8208775933 (or 8208775926 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 402230020031 its reverse (130020032204), we get a palindrome (532250052235).

The spelling of 402230020031 in words is "four hundred two billion, two hundred thirty million, twenty thousand, thirty-one".