31323030210121 has 16 divisors (see below), whose sum is σ = 33778825274880. Its totient is φ = 28873866409920.

The previous prime is 31323030210103. The next prime is 31323030210211. The reversal of 31323030210121 is 12101203032313.

It is a cyclic number.

It is not a de Polignac number, because 31323030210121 - 2⁹ = 31323030209609 is a prime.

It is a super-2 number, since 2×31323030210121² (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 = 31323030210092 and 31323030210101.

It is not an unprimeable number, because it can be changed into a prime (31323030210221) 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, 60527056 + ... + 61042366.

It is an arithmetic number, because the mean of its divisors is an integer number (2111176579680).

Almost surely, 2^{31323030210121} is an apocalyptic number.

It is an amenable number.

31323030210121 is a deficient number, since it is larger than the sum of its proper divisors (2455795064759).

31323030210121 is a wasteful number, since it uses less digits than its factorization.

31323030210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521736.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31323030210121 its reverse (12101203032313), we get a palindrome (43424233242434).

The spelling of 31323030210121 in words is "thirty-one trillion, three hundred twenty-three billion, thirty million, two hundred ten thousand, one hundred twenty-one".