31023201013121 has 16 divisors (see below), whose sum is σ = 31263380711808. Its totient is φ = 30783570480000.

The previous prime is 31023201013117. The next prime is 31023201013159. The reversal of 31023201013121 is 12131010232013.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31023201013121 - 2² = 31023201013117 is a prime.

It is a super-2 number, since 2×31023201013121² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31023201013093 and 31023201013102.

It is not an unprimeable number, because it can be changed into a prime (31023201013421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1632704621 + ... + 1632723621.

It is an arithmetic number, because the mean of its divisors is an integer number (1953961294488).

Almost surely, 2^{31023201013121} is an apocalyptic number.

It is an amenable number.

31023201013121 is a deficient number, since it is larger than the sum of its proper divisors (240179698687).

31023201013121 is a wasteful number, since it uses less digits than its factorization.

31023201013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32792.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31023201013121 its reverse (12131010232013), we get a palindrome (43154211245134).

The spelling of 31023201013121 in words is "thirty-one trillion, twenty-three billion, two hundred one million, thirteen thousand, one hundred twenty-one".