31309132461 has 8 divisors (see below), whose sum is σ = 41797114560. Its totient is φ = 20846952672.

The previous prime is 31309132451. The next prime is 31309132469. The reversal of 31309132461 is 16423190313.

It is a happy number.

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

It is not a de Polignac number, because 31309132461 - 2⁶ = 31309132397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31309132469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6447745 + ... + 6452598.

It is an arithmetic number, because the mean of its divisors is an integer number (5224639320).

Almost surely, 2^31309132461 is an apocalyptic number.

It is an amenable number.

31309132461 is a deficient number, since it is larger than the sum of its proper divisors (10487982099).

31309132461 is a wasteful number, since it uses less digits than its factorization.

31309132461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12901155.

The product of its (nonzero) digits is 11664, while the sum is 33.

The spelling of 31309132461 in words is "thirty-one billion, three hundred nine million, one hundred thirty-two thousand, four hundred sixty-one".