11406784531 has 2 divisors, whose sum is σ = 11406784532. Its totient is φ = 11406784530.

The previous prime is 11406784523. The next prime is 11406784567. The reversal of 11406784531 is 13548760411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11406784531 - 2³ = 11406784523 is a prime.

It is a super-2 number, since 2×11406784531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11406784511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5703392265 + 5703392266.

It is an arithmetic number, because the mean of its divisors is an integer number (5703392266).

Almost surely, 2^11406784531 is an apocalyptic number.

11406784531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11406784531 is an equidigital number, since it uses as much as digits as its factorization.

11406784531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 11406784531 in words is "eleven billion, four hundred six million, seven hundred eighty-four thousand, five hundred thirty-one".