19930031 has 12 divisors (see below), whose sum is σ = 23062200. Its totient is φ = 17162640.

The previous prime is 19930007. The next prime is 19930033. The reversal of 19930031 is 13003991.

It is a de Polignac number, because none of the positive numbers 2^k-19930031 is a prime.

It is a super-2 number, since 2×19930031² = 794412271321922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19930033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2036 + ... + 6633.

It is an arithmetic number, because the mean of its divisors is an integer number (1921850).

Almost surely, 2^19930031 is an apocalyptic number.

19930031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

19930031 is a deficient number, since it is larger than the sum of its proper divisors (3132169).

19930031 is a wasteful number, since it uses less digits than its factorization.

19930031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8710 (or 8699 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 19930031 is about 4464.3063290953. The cubic root of 19930031 is about 271.1248499948.

The spelling of 19930031 in words is "nineteen million, nine hundred thirty thousand, thirty-one".