3931613401 has 4 divisors (see below), whose sum is σ = 3953335204. Its totient is φ = 3909891600.

The previous prime is 3931613351. The next prime is 3931613431. The reversal of 3931613401 is 1043161393.

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

It can be written as a sum of positive squares in 2 ways, for example, as 799532176 + 3132081225 = 28276^2 + 55965^2 .

It is a cyclic number.

It is not a de Polignac number, because 3931613401 - 2¹¹ = 3931611353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3931613431) 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, 10860630 + ... + 10860991.

It is an arithmetic number, because the mean of its divisors is an integer number (988333801).

Almost surely, 2^3931613401 is an apocalyptic number.

It is an amenable number.

3931613401 is a deficient number, since it is larger than the sum of its proper divisors (21721803).

3931613401 is a wasteful number, since it uses less digits than its factorization.

3931613401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21721802.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 3931613401 is about 62702.5789023067. The cubic root of 3931613401 is about 1578.3025889256.

Adding to 3931613401 its reverse (1043161393), we get a palindrome (4974774794).

The spelling of 3931613401 in words is "three billion, nine hundred thirty-one million, six hundred thirteen thousand, four hundred one".