31004100123001 has 4 divisors (see below), whose sum is σ = 31842048775012. Its totient is φ = 30166151470992.

The previous prime is 31004100122999. The next prime is 31004100123043. The reversal of 31004100123001 is 10032100140013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21167728705600 + 9836371417401 = 4600840^2 + 3136299^2 .

It is a cyclic number.

It is not a de Polignac number, because 31004100123001 - 2¹ = 31004100122999 is a prime.

It is a super-2 number, since 2×31004100123001² (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 (31004100120001) 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, 418974325950 + ... + 418974326023.

It is an arithmetic number, because the mean of its divisors is an integer number (7960512193753).

Almost surely, 2^{31004100123001} is an apocalyptic number.

It is an amenable number.

31004100123001 is a deficient number, since it is larger than the sum of its proper divisors (837948652011).

31004100123001 is an equidigital number, since it uses as much as digits as its factorization.

31004100123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837948652010.

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

Adding to 31004100123001 its reverse (10032100140013), we get a palindrome (41036200263014).

The spelling of 31004100123001 in words is "thirty-one trillion, four billion, one hundred million, one hundred twenty-three thousand, one".