31460131 has 4 divisors (see below), whose sum is σ = 31660672. Its totient is φ = 31259592.

The previous prime is 31460129. The next prime is 31460137. The reversal of 31460131 is 13106413.

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 31460131 - 2¹ = 31460129 is a prime.

It is a super-2 number, since 2×31460131² = 1979479685074322, 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 = 31460099 and 31460108.

It is not an unprimeable number, because it can be changed into a prime (31460137) 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, 100035 + ... + 100348.

It is an arithmetic number, because the mean of its divisors is an integer number (7915168).

Almost surely, 2^31460131 is an apocalyptic number.

31460131 is a deficient number, since it is larger than the sum of its proper divisors (200541).

31460131 is a wasteful number, since it uses less digits than its factorization.

31460131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200540.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 31460131 is about 5608.9331427643. The cubic root of 31460131 is about 315.6846818617.

Adding to 31460131 its reverse (13106413), we get a palindrome (44566544).

The spelling of 31460131 in words is "thirty-one million, four hundred sixty thousand, one hundred thirty-one".