131121002331 has 12 divisors (see below), whose sum is σ = 206614912920. Its totient is φ = 79467274080.

The previous prime is 131121002269. The next prime is 131121002387. The reversal of 131121002331 is 133200121131.

131121002331 is a `hidden beast` number, since 1 + 311 + 21 + 0 + 0 + 2 + 331 = 666.

It is not a de Polignac number, because 131121002331 - 2⁷ = 131121002203 is a prime.

It is a super-2 number, since 2×131121002331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131121000331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 662227186 + ... + 662227383.

It is an arithmetic number, because the mean of its divisors is an integer number (17217909410).

Almost surely, 2^131121002331 is an apocalyptic number.

131121002331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131121002331 is a deficient number, since it is larger than the sum of its proper divisors (75493910589).

131121002331 is a wasteful number, since it uses less digits than its factorization.

131121002331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324454586 (or 1324454583 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131121002331 its reverse (133200121131), we get a palindrome (264321123462).

The spelling of 131121002331 in words is "one hundred thirty-one billion, one hundred twenty-one million, two thousand, three hundred thirty-one".