19970031 has 8 divisors (see below), whose sum is σ = 26659584. Its totient is φ = 13296920.

The previous prime is 19970011. The next prime is 19970039. The reversal of 19970031 is 13007991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19970031 - 2⁹ = 19969519 is a prime.

It is a super-2 number, since 2×19970031² = 797604276281922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19970039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (3332448).

Almost surely, 2^19970031 is an apocalyptic number.

19970031 is a deficient number, since it is larger than the sum of its proper divisors (6689553).

19970031 is an equidigital number, since it uses as much as digits as its factorization.

19970031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8221.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 19970031 is about 4468.7840628072. The cubic root of 19970031 is about 271.3061132469.

The spelling of 19970031 in words is "nineteen million, nine hundred seventy thousand, thirty-one".