31436113 has 2 divisors, whose sum is σ = 31436114. Its totient is φ = 31436112.

The previous prime is 31436107. The next prime is 31436129. The reversal of 31436113 is 31163413.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31270464 + 165649 = 5592^2 + 407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31436113 is a prime.

It is not a weakly prime, because it can be changed into another prime (31436413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15718056 + 15718057.

It is an arithmetic number, because the mean of its divisors is an integer number (15718057).

Almost surely, 2^31436113 is an apocalyptic number.

It is an amenable number.

31436113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31436113 is an equidigital number, since it uses as much as digits as its factorization.

31436113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

The square root of 31436113 is about 5606.7916850905. The cubic root of 31436113 is about 315.6043257118.

Adding to 31436113 its reverse (31163413), we get a palindrome (62599526).

The spelling of 31436113 in words is "thirty-one million, four hundred thirty-six thousand, one hundred thirteen".