70031983 has 6 divisors (see below), whose sum is σ = 80061864. Its totient is φ = 60008436.

The previous prime is 70031917. The next prime is 70032031. The reversal of 70031983 is 38913007.

It is a de Polignac number, because none of the positive numbers 2^k-70031983 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 (70032983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20560 + ... + 23722.

It is an arithmetic number, because the mean of its divisors is an integer number (13343644).

Almost surely, 2^70031983 is an apocalyptic number.

70031983 is a deficient number, since it is larger than the sum of its proper divisors (10029881).

70031983 is an frugal number, since it uses more digits than its factorization.

70031983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333 (or 3170 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 70031983 is about 8368.5113968973. The cubic root of 70031983 is about 412.1912875990.

The spelling of 70031983 in words is "seventy million, thirty-one thousand, nine hundred eighty-three".