139311451 has 2 divisors, whose sum is σ = 139311452. Its totient is φ = 139311450.

The previous prime is 139311353. The next prime is 139311511. The reversal of 139311451 is 154113931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139311451 - 2⁷ = 139311323 is a prime.

It is not a weakly prime, because it can be changed into another prime (139311751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69655725 + 69655726.

It is an arithmetic number, because the mean of its divisors is an integer number (69655726).

Almost surely, 2^139311451 is an apocalyptic number.

139311451 is a deficient number, since it is larger than the sum of its proper divisors (1).

139311451 is an equidigital number, since it uses as much as digits as its factorization.

139311451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 28.

The square root of 139311451 is about 11803.0271964441. The cubic root of 139311451 is about 518.3967520845.

The spelling of 139311451 in words is "one hundred thirty-nine million, three hundred eleven thousand, four hundred fifty-one".