31350005073 has 16 divisors (see below), whose sum is σ = 48888897600. Its totient is φ = 19800002880.

The previous prime is 31350005059. The next prime is 31350005087. The reversal of 31350005073 is 37050005313.

It is an interprime number because it is at equal distance from previous prime (31350005059) and next prime (31350005087).

It is not a de Polignac number, because 31350005073 - 2¹² = 31350000977 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (31350005033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30555048 + ... + 30556073.

It is an arithmetic number, because the mean of its divisors is an integer number (3055556100).

Almost surely, 2^31350005073 is an apocalyptic number.

It is an amenable number.

31350005073 is a deficient number, since it is larger than the sum of its proper divisors (17538892527).

31350005073 is a wasteful number, since it uses less digits than its factorization.

31350005073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61111149 (or 61111143 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 27.

The spelling of 31350005073 in words is "thirty-one billion, three hundred fifty million, five thousand, seventy-three".