1031986961 has 2 divisors, whose sum is σ = 1031986962. Its totient is φ = 1031986960.

The previous prime is 1031986937. The next prime is 1031986987. The reversal of 1031986961 is 1696891301.

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., 811167361 + 220819600 = 28481^2 + 14860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031986961 - 2¹⁸ = 1031724817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031982961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515993480 + 515993481.

It is an arithmetic number, because the mean of its divisors is an integer number (515993481).

Almost surely, 2^1031986961 is an apocalyptic number.

It is an amenable number.

1031986961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031986961 is an equidigital number, since it uses as much as digits as its factorization.

1031986961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 1031986961 is about 32124.5538646064. The cubic root of 1031986961 is about 1010.5506134080.

The spelling of 1031986961 in words is "one billion, thirty-one million, nine hundred eighty-six thousand, nine hundred sixty-one".