31100021232001 has 8 divisors (see below), whose sum is σ = 31566372186600. Its totient is φ = 30636268333440.

The previous prime is 31100021231987. The next prime is 31100021232011. The reversal of 31100021232001 is 10023212000113.

It can be written as a sum of positive squares in 4 ways, for example, as 3278362890625 + 27821658341376 = 1810625^2 + 5274624^2 .

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 31100021232001 - 2⁵ = 31100021231969 is a prime.

It is a super-2 number, since 2×31100021232001² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31100021232011) 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, 649489890 + ... + 649537771.

It is an arithmetic number, because the mean of its divisors is an integer number (3945796523325).

Almost surely, 2^{31100021232001} is an apocalyptic number.

It is an amenable number.

31100021232001 is a deficient number, since it is larger than the sum of its proper divisors (466350954599).

31100021232001 is a wasteful number, since it uses less digits than its factorization.

31100021232001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299028019.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31100021232001 its reverse (10023212000113), we get a palindrome (41123233232114).

The spelling of 31100021232001 in words is "thirty-one trillion, one hundred billion, twenty-one million, two hundred thirty-two thousand, one".