31350813461 has 4 divisors (see below), whose sum is σ = 34200887424. Its totient is φ = 28500739500.

The previous prime is 31350813443. The next prime is 31350813493. The reversal of 31350813461 is 16431805313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31350813461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31350813161) 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 3 ways as a sum of consecutive naturals, for example, 1425036965 + ... + 1425036986.

It is an arithmetic number, because the mean of its divisors is an integer number (8550221856).

Almost surely, 2^31350813461 is an apocalyptic number.

It is an amenable number.

31350813461 is a deficient number, since it is larger than the sum of its proper divisors (2850073963).

31350813461 is a wasteful number, since it uses less digits than its factorization.

31350813461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850073962.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 31350813461 in words is "thirty-one billion, three hundred fifty million, eight hundred thirteen thousand, four hundred sixty-one".