31261356144461 has 8 divisors (see below), whose sum is σ = 32910137678880. Its totient is φ = 29612919310128.

The previous prime is 31261356144397. The next prime is 31261356144481. The reversal of 31261356144461 is 16444165316213.

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 31261356144461 - 2⁶ = 31261356144397 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 (31261356144481) 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, 85988846 + ... + 86351631.

It is an arithmetic number, because the mean of its divisors is an integer number (4113767209860).

Almost surely, 2^{31261356144461} is an apocalyptic number.

It is an amenable number.

31261356144461 is a deficient number, since it is larger than the sum of its proper divisors (1648781534419).

31261356144461 is a wasteful number, since it uses less digits than its factorization.

31261356144461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172350043.

The product of its digits is 1244160, while the sum is 47.

The spelling of 31261356144461 in words is "thirty-one trillion, two hundred sixty-one billion, three hundred fifty-six million, one hundred forty-four thousand, four hundred sixty-one".