240478571731 has 2 divisors, whose sum is σ = 240478571732. Its totient is φ = 240478571730.

The previous prime is 240478571693. The next prime is 240478571737. The reversal of 240478571731 is 137175874042.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240478571731 is a prime.

It is a super-2 number, since 2×240478571731² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240478571737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120239285865 + 120239285866.

It is an arithmetic number, because the mean of its divisors is an integer number (120239285866).

Almost surely, 2^240478571731 is an apocalyptic number.

240478571731 is a deficient number, since it is larger than the sum of its proper divisors (1).

240478571731 is an equidigital number, since it uses as much as digits as its factorization.

240478571731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 240478571731 in words is "two hundred forty billion, four hundred seventy-eight million, five hundred seventy-one thousand, seven hundred thirty-one".