240220002256731 has 48 divisors (see below), whose sum is σ = 419882146205184. Its totient is φ = 129193395063552.

The previous prime is 240220002256699. The next prime is 240220002256763. The reversal of 240220002256731 is 137652200022042.

240220002256731 is a `hidden beast` number, since 2 + 40 + 2 + 2 + 0 + 0 + 0 + 22 + 567 + 31 = 666.

It is an interprime number because it is at equal distance from previous prime (240220002256699) and next prime (240220002256763).

It is not a de Polignac number, because 240220002256731 - 2⁵ = 240220002256699 is a prime.

It is a super-2 number, since 2×240220002256731² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (240220002256781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 418095856 + ... + 418670018.

It is an arithmetic number, because the mean of its divisors is an integer number (8747544712608).

Almost surely, 2^{240220002256731} is an apocalyptic number.

240220002256731 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

240220002256731 is a deficient number, since it is larger than the sum of its proper divisors (179662143948453).

240220002256731 is a wasteful number, since it uses less digits than its factorization.

240220002256731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964840 (or 964837 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

Adding to 240220002256731 its reverse (137652200022042), we get a palindrome (377872202278773).

The spelling of 240220002256731 in words is "two hundred forty trillion, two hundred twenty billion, two million, two hundred fifty-six thousand, seven hundred thirty-one".