31409272784131 has 12 divisors (see below), whose sum is σ = 34687864013992. Its totient is φ = 28418557860000.

The previous prime is 31409272784107. The next prime is 31409272784179. The reversal of 31409272784131 is 13148727290413.

It is not a de Polignac number, because 31409272784131 - 2⁷ = 31409272784003 is a prime.

It is a super-2 number, since 2×31409272784131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31409272784101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 615094770 + ... + 615145831.

Almost surely, 2^{31409272784131} is an apocalyptic number.

31409272784131 is a deficient number, since it is larger than the sum of its proper divisors (3278591229861).

31409272784131 is a wasteful number, since it uses less digits than its factorization.

31409272784131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230240834 (or 1230240823 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 31409272784131 in words is "thirty-one trillion, four hundred nine billion, two hundred seventy-two million, seven hundred eighty-four thousand, one hundred thirty-one".