31431022004022 has 16 divisors (see below), whose sum is σ = 62867062282752. Its totient is φ = 10476170955560.

The previous prime is 31431022004017. The next prime is 31431022004111. The reversal of 31431022004022 is 22040022013413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31431022003983 and 31431022004001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209013354 + ... + 209163677.

It is an arithmetic number, because the mean of its divisors is an integer number (3929191392672).

Almost surely, 2^{31431022004022} is an apocalyptic number.

31431022004022 is an abundant number, since it is smaller than the sum of its proper divisors (31436040278730).

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

31431022004022 is a wasteful number, since it uses less digits than its factorization.

31431022004022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418189563.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31431022004022 its reverse (22040022013413), we get a palindrome (53471044017435).

The spelling of 31431022004022 in words is "thirty-one trillion, four hundred thirty-one billion, twenty-two million, four thousand, twenty-two".