31408029131 has 8 divisors (see below), whose sum is σ = 32581348800. Its totient is φ = 30254103360.

The previous prime is 31408029127. The next prime is 31408029157. The reversal of 31408029131 is 13192080413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31408029131 - 2² = 31408029127 is a prime.

It is a super-2 number, since 2×31408029131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31408028131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4845176 + ... + 4851653.

It is an arithmetic number, because the mean of its divisors is an integer number (4072668600).

Almost surely, 2^31408029131 is an apocalyptic number.

31408029131 is a deficient number, since it is larger than the sum of its proper divisors (1173319669).

31408029131 is an equidigital number, since it uses as much as digits as its factorization.

31408029131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9696949.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 31408029131 in words is "thirty-one billion, four hundred eight million, twenty-nine thousand, one hundred thirty-one".