31194641 has 2 divisors, whose sum is σ = 31194642. Its totient is φ = 31194640.

The previous prime is 31194617. The next prime is 31194671. The reversal of 31194641 is 14649113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30030400 + 1164241 = 5480^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 31194641 - 2¹⁸ = 30932497 is a prime.

It is not a weakly prime, because it can be changed into another prime (31194671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15597320 + 15597321.

It is an arithmetic number, because the mean of its divisors is an integer number (15597321).

Almost surely, 2^31194641 is an apocalyptic number.

It is an amenable number.

31194641 is a deficient number, since it is larger than the sum of its proper divisors (1).

31194641 is an equidigital number, since it uses as much as digits as its factorization.

31194641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 31194641 is about 5585.2162894556. The cubic root of 31194641 is about 314.7941579514.

The spelling of 31194641 in words is "thirty-one million, one hundred ninety-four thousand, six hundred forty-one".