31140031203401 has 8 divisors (see below), whose sum is σ = 31176123970824. Its totient is φ = 31103940130560.

The previous prime is 31140031203329. The next prime is 31140031203403. The reversal of 31140031203401 is 10430213004113.

It can be written as a sum of positive squares in 4 ways, for example, as 1131313225 + 31138899890176 = 33635^2 + 5580224^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31140031203401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31140031203403) 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, 38409515 + ... + 39211871.

It is an arithmetic number, because the mean of its divisors is an integer number (3897015496353).

Almost surely, 2^{31140031203401} is an apocalyptic number.

It is an amenable number.

31140031203401 is a deficient number, since it is larger than the sum of its proper divisors (36092767423).

31140031203401 is an equidigital number, since it uses as much as digits as its factorization.

31140031203401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847291.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31140031203401 its reverse (10430213004113), we get a palindrome (41570244207514).

The spelling of 31140031203401 in words is "thirty-one trillion, one hundred forty billion, thirty-one million, two hundred three thousand, four hundred one".