31354136261 has 8 divisors (see below), whose sum is σ = 36368124480. Its totient is φ = 26473854528.

The previous prime is 31354136249. The next prime is 31354136267. The reversal of 31354136261 is 16263145313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31354136261 - 2¹⁴ = 31354119877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31354136267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33426116 + ... + 33427053.

It is an arithmetic number, because the mean of its divisors is an integer number (4546015560).

Almost surely, 2^31354136261 is an apocalyptic number.

It is an amenable number.

31354136261 is a deficient number, since it is larger than the sum of its proper divisors (5013988219).

31354136261 is an equidigital number, since it uses as much as digits as its factorization.

31354136261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66853243.

The product of its digits is 38880, while the sum is 35.

The spelling of 31354136261 in words is "thirty-one billion, three hundred fifty-four million, one hundred thirty-six thousand, two hundred sixty-one".