31350468031 has 4 divisors (see below), whose sum is σ = 31437795600. Its totient is φ = 31263140464.

The previous prime is 31350468029. The next prime is 31350468041. The reversal of 31350468031 is 13086405313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13086405313 = 2269 ⋅5767477.

It is a cyclic number.

It is not a de Polignac number, because 31350468031 - 2¹ = 31350468029 is a prime.

It is a super-2 number, since 2×31350468031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31350468041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43663246 + ... + 43663963.

It is an arithmetic number, because the mean of its divisors is an integer number (7859448900).

Almost surely, 2^31350468031 is an apocalyptic number.

31350468031 is a deficient number, since it is larger than the sum of its proper divisors (87327569).

31350468031 is an equidigital number, since it uses as much as digits as its factorization.

31350468031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87327568.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 31350468031 in words is "thirty-one billion, three hundred fifty million, four hundred sixty-eight thousand, thirty-one".