135679031 has 2 divisors, whose sum is σ = 135679032. Its totient is φ = 135679030.

The previous prime is 135679009. The next prime is 135679039. The reversal of 135679031 is 130976531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135679031 - 2⁶ = 135678967 is a prime.

It is a super-2 number, since 2×135679031² = 36817598906197922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135678982 and 135679000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135679039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67839515 + 67839516.

It is an arithmetic number, because the mean of its divisors is an integer number (67839516).

Almost surely, 2^135679031 is an apocalyptic number.

135679031 is a deficient number, since it is larger than the sum of its proper divisors (1).

135679031 is an equidigital number, since it uses as much as digits as its factorization.

135679031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 135679031 is about 11648.1342282788. The cubic root of 135679031 is about 513.8514398037.

The spelling of 135679031 in words is "one hundred thirty-five million, six hundred seventy-nine thousand, thirty-one".