72119931 has 8 divisors (see below), whose sum is σ = 103556880. Its totient is φ = 44381472.

The previous prime is 72119917. The next prime is 72119941. The reversal of 72119931 is 13991127.

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

It is not a de Polignac number, because 72119931 - 2⁶ = 72119867 is a prime.

It is a super-2 number, since 2×72119931² = 10402568894889522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72119892 and 72119901.

It is not an unprimeable number, because it can be changed into a prime (72119941) 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, 924576 + ... + 924653.

It is an arithmetic number, because the mean of its divisors is an integer number (12944610).

Almost surely, 2^72119931 is an apocalyptic number.

72119931 is a deficient number, since it is larger than the sum of its proper divisors (31436949).

72119931 is a wasteful number, since it uses less digits than its factorization.

72119931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849245.

The product of its digits is 3402, while the sum is 33.

The square root of 72119931 is about 8492.3454357439. The cubic root of 72119931 is about 416.2476240069.

The spelling of 72119931 in words is "seventy-two million, one hundred nineteen thousand, nine hundred thirty-one".