31204061 has 32 divisors (see below), whose sum is σ = 40930560. Its totient is φ = 23141376.

The previous prime is 31204039. The next prime is 31204067. The reversal of 31204061 is 16040213.

It is a cyclic number.

It is not a de Polignac number, because 31204061 - 2¹⁴ = 31187677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83471 + ... + 83843.

It is an arithmetic number, because the mean of its divisors is an integer number (1279080).

Almost surely, 2^31204061 is an apocalyptic number.

It is an amenable number.

31204061 is a deficient number, since it is larger than the sum of its proper divisors (9726499).

31204061 is a wasteful number, since it uses less digits than its factorization.

31204061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 31204061 is about 5586.0595234924. The cubic root of 31204061 is about 314.8258414119.

Adding to 31204061 its reverse (16040213), we get a palindrome (47244274).

The spelling of 31204061 in words is "thirty-one million, two hundred four thousand, sixty-one".