31003441061 has 2 divisors, whose sum is σ = 31003441062. Its totient is φ = 31003441060.

The previous prime is 31003441057. The next prime is 31003441081. The reversal of 31003441061 is 16014430013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27800560225 + 3202880836 = 166735^2 + 56594^2 .

It is a cyclic number.

It is not a de Polignac number, because 31003441061 - 2² = 31003441057 is a prime.

It is a super-2 number, since 2×31003441061² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31003441081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15501720530 + 15501720531.

It is an arithmetic number, because the mean of its divisors is an integer number (15501720531).

Almost surely, 2^31003441061 is an apocalyptic number.

It is an amenable number.

31003441061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31003441061 is an equidigital number, since it uses as much as digits as its factorization.

31003441061 is an evil number, because the sum of its binary digits is even.

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

Adding to 31003441061 its reverse (16014430013), we get a palindrome (47017871074).

The spelling of 31003441061 in words is "thirty-one billion, three million, four hundred forty-one thousand, sixty-one".