40187494531 has 2 divisors, whose sum is σ = 40187494532. Its totient is φ = 40187494530.

The previous prime is 40187494511. The next prime is 40187494547. The reversal of 40187494531 is 13549478104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40187494531 - 2¹¹ = 40187492483 is a prime.

It is a super-2 number, since 2×40187494531² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40187494511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20093747265 + 20093747266.

It is an arithmetic number, because the mean of its divisors is an integer number (20093747266).

Almost surely, 2^40187494531 is an apocalyptic number.

40187494531 is a deficient number, since it is larger than the sum of its proper divisors (1).

40187494531 is an equidigital number, since it uses as much as digits as its factorization.

40187494531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 40187494531 in words is "forty billion, one hundred eighty-seven million, four hundred ninety-four thousand, five hundred thirty-one".