3131401421 has 8 divisors (see below), whose sum is σ = 3161721600. Its totient is φ = 3101127232.

The previous prime is 3131401397. The next prime is 3131401439. The reversal of 3131401421 is 1241041313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3131401421 - 2²² = 3127207117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131401393 and 3131401402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131401451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134180 + ... + 155778.

It is an arithmetic number, because the mean of its divisors is an integer number (395215200).

Almost surely, 2^3131401421 is an apocalyptic number.

It is an amenable number.

3131401421 is a deficient number, since it is larger than the sum of its proper divisors (30320179).

3131401421 is a wasteful number, since it uses less digits than its factorization.

3131401421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22995.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 3131401421 is about 55958.9261959162. The cubic root of 3131401421 is about 1463.0064745559.

Adding to 3131401421 its reverse (1241041313), we get a palindrome (4372442734).

The spelling of 3131401421 in words is "three billion, one hundred thirty-one million, four hundred one thousand, four hundred twenty-one".