139431948023 has 2 divisors, whose sum is σ = 139431948024. Its totient is φ = 139431948022.

The previous prime is 139431947969. The next prime is 139431948031. The reversal of 139431948023 is 320849134931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139431948023 - 2⁶ = 139431947959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139431948043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69715974011 + 69715974012.

It is an arithmetic number, because the mean of its divisors is an integer number (69715974012).

Almost surely, 2^139431948023 is an apocalyptic number.

139431948023 is a deficient number, since it is larger than the sum of its proper divisors (1).

139431948023 is an equidigital number, since it uses as much as digits as its factorization.

139431948023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 139431948023 in words is "one hundred thirty-nine billion, four hundred thirty-one million, nine hundred forty-eight thousand, twenty-three".