31061963 has 2 divisors, whose sum is σ = 31061964. Its totient is φ = 31061962.

The previous prime is 31061917. The next prime is 31062001. The reversal of 31061963 is 36916013.

It is a strong prime.

It is an emirp because it is prime and its reverse (36916013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31061963 - 2¹² = 31057867 is a prime.

It is equal to p_1919540 and since 31061963 and 1919540 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (31061263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15530981 + 15530982.

It is an arithmetic number, because the mean of its divisors is an integer number (15530982).

Almost surely, 2^31061963 is an apocalyptic number.

31061963 is a deficient number, since it is larger than the sum of its proper divisors (1).

31061963 is an equidigital number, since it uses as much as digits as its factorization.

31061963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 31061963 is about 5573.3260267097. The cubic root of 31061963 is about 314.3472263406.

Adding to 31061963 its reverse (36916013), we get a palindrome (67977976).

The spelling of 31061963 in words is "thirty-one million, sixty-one thousand, nine hundred sixty-three".