3807121086531 has 12 divisors (see below), whose sum is σ = 6284771317552. Its totient is φ = 2175497763696.

The previous prime is 3807121086521. The next prime is 3807121086533. The reversal of 3807121086531 is 1356801217083.

It is a happy number.

3807121086531 is a `hidden beast` number, since 3 + 8 + 0 + 7 + 1 + 2 + 108 + 6 + 531 = 666.

It is not a de Polignac number, because 3807121086531 - 2¹¹ = 3807121084483 is a prime.

It is a super-2 number, since 2×3807121086531² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3807121086533) 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, 30215246656 + ... + 30215246781.

Almost surely, 2^{3807121086531} is an apocalyptic number.

3807121086531 is a deficient number, since it is larger than the sum of its proper divisors (2477650231021).

3807121086531 is a wasteful number, since it uses less digits than its factorization.

3807121086531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60430493450 (or 60430493447 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 3807121086531 in words is "three trillion, eight hundred seven billion, one hundred twenty-one million, eighty-six thousand, five hundred thirty-one".