31020133300121 has 4 divisors (see below), whose sum is σ = 35451580914432. Its totient is φ = 26588685685812.

The previous prime is 31020133300111. The next prime is 31020133300183. The reversal of 31020133300121 is 12100333102013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31020133300121 - 2¹⁸ = 31020133037977 is a prime.

It is a super-2 number, since 2×31020133300121² (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 = 31020133300093 and 31020133300102.

It is not an unprimeable number, because it can be changed into a prime (31020133300111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2215723807145 + ... + 2215723807158.

It is an arithmetic number, because the mean of its divisors is an integer number (8862895228608).

Almost surely, 2^{31020133300121} is an apocalyptic number.

It is an amenable number.

31020133300121 is a deficient number, since it is larger than the sum of its proper divisors (4431447614311).

31020133300121 is an equidigital number, since it uses as much as digits as its factorization.

31020133300121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4431447614310.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31020133300121 its reverse (12100333102013), we get a palindrome (43120466402134).

The spelling of 31020133300121 in words is "thirty-one trillion, twenty billion, one hundred thirty-three million, three hundred thousand, one hundred twenty-one".