31030121121023 has 8 divisors (see below), whose sum is σ = 32100243556080. Its totient is φ = 29960006569920.

The previous prime is 31030121121011. The next prime is 31030121121029. The reversal of 31030121121023 is 32012112103013.

It is a happy number.

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 31030121121023 - 2⁴ = 31030121121007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31030121120986 and 31030121121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030121121029) 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, 6680108 + ... + 10328798.

It is an arithmetic number, because the mean of its divisors is an integer number (4012530444510).

Almost surely, 2^{31030121121023} is an apocalyptic number.

31030121121023 is a deficient number, since it is larger than the sum of its proper divisors (1070122435057).

31030121121023 is a wasteful number, since it uses less digits than its factorization.

31030121121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941977.

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

Adding to 31030121121023 its reverse (32012112103013), we get a palindrome (63042233224036).

The spelling of 31030121121023 in words is "thirty-one trillion, thirty billion, one hundred twenty-one million, one hundred twenty-one thousand, twenty-three".