139152931 has 8 divisors (see below), whose sum is σ = 142203600. Its totient is φ = 136118112.

The previous prime is 139152913. The next prime is 139152943. The reversal of 139152931 is 139251931.

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 139152931 - 2¹¹ = 139150883 is a prime.

It is a super-2 number, since 2×139152931² = 38727076411781522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139152911) 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, 14736 + ... + 22258.

It is an arithmetic number, because the mean of its divisors is an integer number (17775450).

Almost surely, 2^139152931 is an apocalyptic number.

139152931 is a deficient number, since it is larger than the sum of its proper divisors (3050669).

139152931 is an equidigital number, since it uses as much as digits as its factorization.

139152931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7925.

The product of its digits is 7290, while the sum is 34.

The square root of 139152931 is about 11796.3100586582. The cubic root of 139152931 is about 518.2000526717.

The spelling of 139152931 in words is "one hundred thirty-nine million, one hundred fifty-two thousand, nine hundred thirty-one".