31230121122031 has 8 divisors (see below), whose sum is σ = 34717355490944. Its totient is φ = 27897874947360.

The previous prime is 31230121122023. The next prime is 31230121122119. The reversal of 31230121122031 is 13022112103213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31230121122031 - 2³ = 31230121122023 is a prime.

It is a super-2 number, since 2×31230121122031² (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 = 31230121121993 and 31230121122011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230121122331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38747048136 + ... + 38747048941.

It is an arithmetic number, because the mean of its divisors is an integer number (4339669436368).

Almost surely, 2^{31230121122031} is an apocalyptic number.

31230121122031 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31230121122031 is a deficient number, since it is larger than the sum of its proper divisors (3487234368913).

31230121122031 is a wasteful number, since it uses less digits than its factorization.

31230121122031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77494097121.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31230121122031 its reverse (13022112103213), we get a palindrome (44252233225244).

The spelling of 31230121122031 in words is "thirty-one trillion, two hundred thirty billion, one hundred twenty-one million, one hundred twenty-two thousand, thirty-one".