139340331 has 64 divisors (see below), whose sum is σ = 234192000. Its totient is φ = 82791072.

The previous prime is 139340329. The next prime is 139340353. The reversal of 139340331 is 133043931.

It is not a de Polignac number, because 139340331 - 2¹ = 139340329 is a prime.

It is a super-2 number, since 2×139340331² = 38831455686379122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 139340295 and 139340304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139340321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4804825 + ... + 4804853.

It is an arithmetic number, because the mean of its divisors is an integer number (3659250).

Almost surely, 2^139340331 is an apocalyptic number.

139340331 is a deficient number, since it is larger than the sum of its proper divisors (94851669).

139340331 is an frugal number, since it uses more digits than its factorization.

139340331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 139340331 is about 11804.2505480018. The cubic root of 139340331 is about 518.4325717382.

The spelling of 139340331 in words is "one hundred thirty-nine million, three hundred forty thousand, three hundred thirty-one".