31404225131 has 8 divisors (see below), whose sum is σ = 32152617024. Its totient is φ = 30656654280.

The previous prime is 31404225119. The next prime is 31404225133. The reversal of 31404225131 is 13152240413.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31404225131 - 2¹⁸ = 31403962987 is a prime.

It is a super-2 number, since 2×31404225131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31404225131.

It is not an unprimeable number, because it can be changed into a prime (31404225133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127505 + ... + 281186.

It is an arithmetic number, because the mean of its divisors is an integer number (4019077128).

Almost surely, 2^31404225131 is an apocalyptic number.

31404225131 is a deficient number, since it is larger than the sum of its proper divisors (748391893).

31404225131 is a wasteful number, since it uses less digits than its factorization.

31404225131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410521.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 31404225131 its reverse (13152240413), we get a palindrome (44556465544).

The spelling of 31404225131 in words is "thirty-one billion, four hundred four million, two hundred twenty-five thousand, one hundred thirty-one".