312142436431 has 4 divisors (see below), whose sum is σ = 356734213072. Its totient is φ = 267550659792.

The previous prime is 312142436429. The next prime is 312142436467. The reversal of 312142436431 is 134634241213.

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 312142436431 - 2¹ = 312142436429 is a prime.

It is a super-2 number, since 2×312142436431² (a number of 24 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 (312142436471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22295888310 + ... + 22295888323.

It is an arithmetic number, because the mean of its divisors is an integer number (89183553268).

Almost surely, 2^312142436431 is an apocalyptic number.

312142436431 is a deficient number, since it is larger than the sum of its proper divisors (44591776641).

312142436431 is an equidigital number, since it uses as much as digits as its factorization.

312142436431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44591776640.

The product of its digits is 41472, while the sum is 34.

Adding to 312142436431 its reverse (134634241213), we get a palindrome (446776677644).

The spelling of 312142436431 in words is "three hundred twelve billion, one hundred forty-two million, four hundred thirty-six thousand, four hundred thirty-one".