31100010535421 has 4 divisors (see below), whose sum is σ = 32736853195200. Its totient is φ = 29463167875644.

The previous prime is 31100010535417. The next prime is 31100010535543. The reversal of 31100010535421 is 12453501000113.

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 31100010535421 - 2² = 31100010535417 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 (31100010535721) 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, 818421329861 + ... + 818421329898.

It is an arithmetic number, because the mean of its divisors is an integer number (8184213298800).

Almost surely, 2^{31100010535421} is an apocalyptic number.

It is an amenable number.

31100010535421 is a deficient number, since it is larger than the sum of its proper divisors (1636842659779).

31100010535421 is a wasteful number, since it uses less digits than its factorization.

31100010535421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636842659778.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 31100010535421 its reverse (12453501000113), we get a palindrome (43553511535534).

The spelling of 31100010535421 in words is "thirty-one trillion, one hundred billion, ten million, five hundred thirty-five thousand, four hundred twenty-one".