31480061 has 2 divisors, whose sum is σ = 31480062. Its totient is φ = 31480060.

The previous prime is 31480049. The next prime is 31480079. The reversal of 31480061 is 16008413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26327161 + 5152900 = 5131^2 + 2270^2 .

It is a cyclic number.

It is not a de Polignac number, because 31480061 - 2²² = 27285757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31480021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15740030 + 15740031.

It is an arithmetic number, because the mean of its divisors is an integer number (15740031).

Almost surely, 2^31480061 is an apocalyptic number.

It is an amenable number.

31480061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31480061 is an equidigital number, since it uses as much as digits as its factorization.

31480061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 31480061 is about 5610.7094916775. The cubic root of 31480061 is about 315.7513298953.

Adding to 31480061 its reverse (16008413), we get a palindrome (47488474).

The spelling of 31480061 in words is "thirty-one million, four hundred eighty thousand, sixty-one".