240131313551 has 4 divisors (see below), whose sum is σ = 240136658952. Its totient is φ = 240125968152.

The previous prime is 240131313533. The next prime is 240131313559. The reversal of 240131313551 is 155313131042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240131313551 - 2³⁴ = 222951444367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240131313559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2604740 + ... + 2695353.

It is an arithmetic number, because the mean of its divisors is an integer number (60034164738).

Almost surely, 2^240131313551 is an apocalyptic number.

240131313551 is a deficient number, since it is larger than the sum of its proper divisors (5345401).

240131313551 is an equidigital number, since it uses as much as digits as its factorization.

240131313551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345400.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 240131313551 its reverse (155313131042), we get a palindrome (395444444593).

The spelling of 240131313551 in words is "two hundred forty billion, one hundred thirty-one million, three hundred thirteen thousand, five hundred fifty-one".