3131401431 has 4 divisors (see below), whose sum is σ = 4175201912. Its totient is φ = 2087600952.

The previous prime is 3131401397. The next prime is 3131401439. The reversal of 3131401431 is 1341041313.

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

It is not a de Polignac number, because 3131401431 - 2¹⁰ = 3131400407 is a prime.

It is a super-2 number, since 2×3131401431² = 19611349844137695522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131401398 and 3131401407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131401439) 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, 521900236 + ... + 521900241.

It is an arithmetic number, because the mean of its divisors is an integer number (1043800478).

Almost surely, 2^3131401431 is an apocalyptic number.

3131401431 is a deficient number, since it is larger than the sum of its proper divisors (1043800481).

3131401431 is a wasteful number, since it uses less digits than its factorization.

3131401431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043800480.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 3131401431 is about 55958.9262852675. The cubic root of 3131401431 is about 1463.0064761132.

Adding to 3131401431 its reverse (1341041313), we get a palindrome (4472442744).

The spelling of 3131401431 in words is "three billion, one hundred thirty-one million, four hundred one thousand, four hundred thirty-one".