31023123301001 has 24 divisors (see below), whose sum is σ = 33684495680664. Its totient is φ = 28558853406720.

The previous prime is 31023123300991. The next prime is 31023123301013. The reversal of 31023123301001 is 10010332132013.

It can be written as a sum of positive squares in 12 ways, for example, as 19674148158025 + 11348975142976 = 4435555^2 + 3368824^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31023123301001 is a prime.

It is a super-2 number, since 2×31023123301001² (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 (31023123301091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210313865 + ... + 210461321.

It is an arithmetic number, because the mean of its divisors is an integer number (1403520653361).

Almost surely, 2^{31023123301001} is an apocalyptic number.

It is an amenable number.

31023123301001 is a deficient number, since it is larger than the sum of its proper divisors (2661372379663).

31023123301001 is a wasteful number, since it uses less digits than its factorization.

31023123301001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150861 (or 150848 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31023123301001 its reverse (10010332132013), we get a palindrome (41033455433014).

The spelling of 31023123301001 in words is "thirty-one trillion, twenty-three billion, one hundred twenty-three million, three hundred one thousand, one".