31132300121 has 16 divisors (see below), whose sum is σ = 33746496000. Its totient is φ = 28549981440.

The previous prime is 31132300103. The next prime is 31132300127. The reversal of 31132300121 is 12100323113.

It is a cyclic number.

It is not a de Polignac number, because 31132300121 - 2¹⁰ = 31132299097 is a prime.

It is a super-2 number, since 2×31132300121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31132300121.

It is not an unprimeable number, because it can be changed into a prime (31132300127) 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, 1435841 + ... + 1457361.

It is an arithmetic number, because the mean of its divisors is an integer number (2109156000).

Almost surely, 2^31132300121 is an apocalyptic number.

It is an amenable number.

31132300121 is a deficient number, since it is larger than the sum of its proper divisors (2614195879).

31132300121 is a wasteful number, since it uses less digits than its factorization.

31132300121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22256.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31132300121 its reverse (12100323113), we get a palindrome (43232623234).

The spelling of 31132300121 in words is "thirty-one billion, one hundred thirty-two million, three hundred thousand, one hundred twenty-one".