311440332242431 has 16 divisors (see below), whose sum is σ = 367727240255488. Its totient is φ = 258116989759200.

The previous prime is 311440332242393. The next prime is 311440332242467. The reversal of 311440332242431 is 134242233044113.

It is a cyclic number.

It is not a de Polignac number, because 311440332242431 - 2¹⁵ = 311440332209663 is a prime.

It is a super-2 number, since 2×311440332242431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311440332242731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612559260 + ... + 613067473.

It is an arithmetic number, because the mean of its divisors is an integer number (22982952515968).

Almost surely, 2^{311440332242431} is an apocalyptic number.

311440332242431 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

311440332242431 is a deficient number, since it is larger than the sum of its proper divisors (56286908013057).

311440332242431 is a wasteful number, since it uses less digits than its factorization.

311440332242431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225627942.

The product of its (nonzero) digits is 165888, while the sum is 37.

Adding to 311440332242431 its reverse (134242233044113), we get a palindrome (445682565286544).

The spelling of 311440332242431 in words is "three hundred eleven trillion, four hundred forty billion, three hundred thirty-two million, two hundred forty-two thousand, four hundred thirty-one".