135397976031 has 24 divisors (see below), whose sum is σ = 204909314064. Its totient is φ = 89334731520.

The previous prime is 135397976003. The next prime is 135397976033. The reversal of 135397976031 is 130679793531.

135397976031 is a `hidden beast` number, since 1 + 3 + 539 + 7 + 9 + 76 + 0 + 31 = 666.

It is not a de Polignac number, because 135397976031 - 2⁷ = 135397975903 is a prime.

It is a super-2 number, since 2×135397976031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135397976033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2848560 + ... + 2895701.

It is an arithmetic number, because the mean of its divisors is an integer number (8537888086).

Almost surely, 2^135397976031 is an apocalyptic number.

135397976031 is a deficient number, since it is larger than the sum of its proper divisors (69511338033).

135397976031 is an frugal number, since it uses more digits than its factorization.

135397976031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744373 (or 5744361 counting only the distinct ones).

The product of its (nonzero) digits is 3214890, while the sum is 54.

The spelling of 135397976031 in words is "one hundred thirty-five billion, three hundred ninety-seven million, nine hundred seventy-six thousand, thirty-one".