11487506931 has 12 divisors (see below), whose sum is σ = 16603839408. Its totient is φ = 7653365424.

The previous prime is 11487506923. The next prime is 11487506939. The reversal of 11487506931 is 13960578411.

11487506931 is a `hidden beast` number, since 11 + 48 + 7 + 506 + 93 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (11487506923) and next prime (11487506939).

It is not a de Polignac number, because 11487506931 - 2³ = 11487506923 is a prime.

It is a super-2 number, since 2×11487506931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11487506939) 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, 399720 + ... + 427493.

It is an arithmetic number, because the mean of its divisors is an integer number (1383653284).

Almost surely, 2^11487506931 is an apocalyptic number.

11487506931 is a deficient number, since it is larger than the sum of its proper divisors (5116332477).

11487506931 is a wasteful number, since it uses less digits than its factorization.

11487506931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828762 (or 828759 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 11487506931 in words is "eleven billion, four hundred eighty-seven million, five hundred six thousand, nine hundred thirty-one".