135084238631 has 4 divisors (see below), whose sum is σ = 135109089432. Its totient is φ = 135059387832.

The previous prime is 135084238621. The next prime is 135084238637. The reversal of 135084238631 is 136832480531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135084238631 is a prime.

It is a super-2 number, since 2×135084238631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135084238637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12417245 + ... + 12428118.

It is an arithmetic number, because the mean of its divisors is an integer number (33777272358).

Almost surely, 2^135084238631 is an apocalyptic number.

135084238631 is a deficient number, since it is larger than the sum of its proper divisors (24850801).

135084238631 is an equidigital number, since it uses as much as digits as its factorization.

135084238631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24850800.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 135084238631 in words is "one hundred thirty-five billion, eighty-four million, two hundred thirty-eight thousand, six hundred thirty-one".