31970453741 has 4 divisors (see below), whose sum is σ = 31970893500. Its totient is φ = 31970013984.

The previous prime is 31970453719. The next prime is 31970453747. The reversal of 31970453741 is 14735407913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14735407913 = 41 ⋅359400193.

It can be written as a sum of positive squares in 2 ways, for example, as 30509608900 + 1460844841 = 174670^2 + 38221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31970453741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31970453692 and 31970453701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31970453747) 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, 82016 + ... + 265833.

It is an arithmetic number, because the mean of its divisors is an integer number (7992723375).

Almost surely, 2^31970453741 is an apocalyptic number.

It is an amenable number.

31970453741 is a deficient number, since it is larger than the sum of its proper divisors (439759).

31970453741 is an equidigital number, since it uses as much as digits as its factorization.

31970453741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439758.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 31970453741 in words is "thirty-one billion, nine hundred seventy million, four hundred fifty-three thousand, seven hundred forty-one".