31020321132001 has 4 divisors (see below), whose sum is σ = 31193619015600. Its totient is φ = 30847023248404.

The previous prime is 31020321131983. The next prime is 31020321132019. The reversal of 31020321132001 is 10023112302013.

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 an interprime number because it is at equal distance from previous prime (31020321131983) and next prime (31020321132019).

It is a cyclic number.

It is not a de Polignac number, because 31020321132001 - 2¹³ = 31020321123809 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 31020321132001.

It is not an unprimeable number, because it can be changed into a prime (31020321132071) 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, 86648941531 + ... + 86648941888.

It is an arithmetic number, because the mean of its divisors is an integer number (7798404753900).

Almost surely, 2^{31020321132001} is an apocalyptic number.

It is an amenable number.

31020321132001 is a deficient number, since it is larger than the sum of its proper divisors (173297883599).

31020321132001 is a wasteful number, since it uses less digits than its factorization.

31020321132001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173297883598.

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

Adding to 31020321132001 its reverse (10023112302013), we get a palindrome (41043433434014).

The spelling of 31020321132001 in words is "thirty-one trillion, twenty billion, three hundred twenty-one million, one hundred thirty-two thousand, one".