31260061 has 4 divisors (see below), whose sum is σ = 35725792. Its totient is φ = 26794332.

The previous prime is 31260049. The next prime is 31260067. The reversal of 31260061 is 16006213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31260061 - 2⁷ = 31259933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31260067) 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, 2232855 + ... + 2232868.

It is an arithmetic number, because the mean of its divisors is an integer number (8931448).

Almost surely, 2^31260061 is an apocalyptic number.

It is an amenable number.

31260061 is a deficient number, since it is larger than the sum of its proper divisors (4465731).

31260061 is an equidigital number, since it uses as much as digits as its factorization.

31260061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4465730.

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

The square root of 31260061 is about 5591.0697545282. The cubic root of 31260061 is about 315.0140616886.

Adding to 31260061 its reverse (16006213), we get a palindrome (47266274).

The spelling of 31260061 in words is "thirty-one million, two hundred sixty thousand, sixty-one".