31013120231001 has 6 divisors (see below), whose sum is σ = 44796729222570. Its totient is φ = 20675413487328.

The previous prime is 31013120230999. The next prime is 31013120231069. The reversal of 31013120231001 is 10013202131013.

31013120231001 is a `hidden beast` number, since 310 + 1 + 3 + 120 + 231 + 0 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16783966886976 + 14229153344025 = 4096824^2 + 3772155^2 .

It is not a de Polignac number, because 31013120231001 - 2¹ = 31013120230999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31013120231201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1722951123936 + ... + 1722951123953.

It is an arithmetic number, because the mean of its divisors is an integer number (7466121537095).

Almost surely, 2^{31013120231001} is an apocalyptic number.

It is an amenable number.

31013120231001 is a deficient number, since it is larger than the sum of its proper divisors (13783608991569).

31013120231001 is a wasteful number, since it uses less digits than its factorization.

31013120231001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445902247895 (or 3445902247892 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31013120231001 its reverse (10013202131013), we get a palindrome (41026322362014).

The spelling of 31013120231001 in words is "thirty-one trillion, thirteen billion, one hundred twenty million, two hundred thirty-one thousand, one".