31540214461 has 8 divisors (see below), whose sum is σ = 38166310080. Its totient is φ = 25444206528.

The previous prime is 31540214441. The next prime is 31540214507. The reversal of 31540214461 is 16441204513.

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 31540214461 - 2¹⁵ = 31540181693 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 (31540214441) 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, 132521791 + ... + 132522028.

It is an arithmetic number, because the mean of its divisors is an integer number (4770788760).

Almost surely, 2^31540214461 is an apocalyptic number.

It is an amenable number.

31540214461 is a deficient number, since it is larger than the sum of its proper divisors (6626095619).

31540214461 is a wasteful number, since it uses less digits than its factorization.

31540214461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265043843.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 31540214461 its reverse (16441204513), we get a palindrome (47981418974).

The spelling of 31540214461 in words is "thirty-one billion, five hundred forty million, two hundred fourteen thousand, four hundred sixty-one".