3131282100061 has 4 divisors (see below), whose sum is σ = 3131287782624. Its totient is φ = 3131276417500.

The previous prime is 3131282100059. The next prime is 3131282100101. The reversal of 3131282100061 is 1600012821313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3131282100061 - 2¹ = 3131282100059 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 (3131282700061) 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, 1913815 + ... + 3150436.

It is an arithmetic number, because the mean of its divisors is an integer number (782821945656).

Almost surely, 2^{3131282100061} is an apocalyptic number.

It is an amenable number.

3131282100061 is a deficient number, since it is larger than the sum of its proper divisors (5682563).

3131282100061 is an equidigital number, since it uses as much as digits as its factorization.

3131282100061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682562.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 3131282100061 its reverse (1600012821313), we get a palindrome (4731294921374).

The spelling of 3131282100061 in words is "three trillion, one hundred thirty-one billion, two hundred eighty-two million, one hundred thousand, sixty-one".