31125373543 has 4 divisors (see below), whose sum is σ = 33954952968. Its totient is φ = 28295794120.

The previous prime is 31125373523. The next prime is 31125373597. The reversal of 31125373543 is 34537352113.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31125373543 - 2⁹ = 31125373031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31125373523) 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, 1414789696 + ... + 1414789717.

It is an arithmetic number, because the mean of its divisors is an integer number (8488738242).

Almost surely, 2^31125373543 is an apocalyptic number.

31125373543 is a deficient number, since it is larger than the sum of its proper divisors (2829579425).

31125373543 is a wasteful number, since it uses less digits than its factorization.

31125373543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829579424.

The product of its digits is 113400, while the sum is 37.

The spelling of 31125373543 in words is "thirty-one billion, one hundred twenty-five million, three hundred seventy-three thousand, five hundred forty-three".