31348021135 has 4 divisors (see below), whose sum is σ = 37617625368. Its totient is φ = 25078416904.

The previous prime is 31348021123. The next prime is 31348021157. The reversal of 31348021135 is 53112084313.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31348021135 - 2¹⁵ = 31347988367 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31348021097 and 31348021106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3134802109 + ... + 3134802118.

It is an arithmetic number, because the mean of its divisors is an integer number (9404406342).

Almost surely, 2^31348021135 is an apocalyptic number.

31348021135 is a deficient number, since it is larger than the sum of its proper divisors (6269604233).

31348021135 is an equidigital number, since it uses as much as digits as its factorization.

31348021135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269604232.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 31348021135 in words is "thirty-one billion, three hundred forty-eight million, twenty-one thousand, one hundred thirty-five".