31413461 has 2 divisors, whose sum is σ = 31413462. Its totient is φ = 31413460.

The previous prime is 31413451. The next prime is 31413463. The reversal of 31413461 is 16431413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16859236 + 14554225 = 4106^2 + 3815^2 .

It is an emirp because it is prime and its reverse (16431413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31413461 - 2⁶ = 31413397 is a prime.

It is a Sophie Germain prime.

Together with 31413463, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31413463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15706730 + 15706731.

It is an arithmetic number, because the mean of its divisors is an integer number (15706731).

Almost surely, 2^31413461 is an apocalyptic number.

It is an amenable number.

31413461 is a deficient number, since it is larger than the sum of its proper divisors (1).

31413461 is an equidigital number, since it uses as much as digits as its factorization.

31413461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 31413461 is about 5604.7712709798. The cubic root of 31413461 is about 315.5285022259.

Adding to 31413461 its reverse (16431413), we get a palindrome (47844874).

The spelling of 31413461 in words is "thirty-one million, four hundred thirteen thousand, four hundred sixty-one".