31220130312001 has 12 divisors (see below), whose sum is σ = 32710887711040. Its totient is φ = 29794708670760.

The previous prime is 31220130311947. The next prime is 31220130312037. The reversal of 31220130312001 is 10021303102213.

It is not a de Polignac number, because 31220130312001 - 2²⁹ = 31219593441089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31220130312001.

It is not an unprimeable number, because it can be changed into a prime (31220130312601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66985605 + ... + 67450066.

Almost surely, 2^{31220130312001} is an apocalyptic number.

It is an amenable number.

31220130312001 is a deficient number, since it is larger than the sum of its proper divisors (1490757399039).

31220130312001 is a wasteful number, since it uses less digits than its factorization.

31220130312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134436156 (or 134436133 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31220130312001 its reverse (10021303102213), we get a palindrome (41241433414214).

The spelling of 31220130312001 in words is "thirty-one trillion, two hundred twenty billion, one hundred thirty million, three hundred twelve thousand, one".