31400022115205 has 16 divisors (see below), whose sum is σ = 39962850678144. Its totient is φ = 23633943938880.

The previous prime is 31400022115141. The next prime is 31400022115243. The reversal of 31400022115205 is 50251122000413.

It is not a de Polignac number, because 31400022115205 - 2⁶ = 31400022115141 is a prime.

It is a super-2 number, since 2×31400022115205² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2238055859 + ... + 2238069888.

It is an arithmetic number, because the mean of its divisors is an integer number (2497678167384).

Almost surely, 2^{31400022115205} is an apocalyptic number.

It is an amenable number.

31400022115205 is a deficient number, since it is larger than the sum of its proper divisors (8562828562939).

31400022115205 is a wasteful number, since it uses less digits than its factorization.

31400022115205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476125836.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 31400022115205 its reverse (50251122000413), we get a palindrome (81651144115618).

The spelling of 31400022115205 in words is "thirty-one trillion, four hundred billion, twenty-two million, one hundred fifteen thousand, two hundred five".