1031979979 has 2 divisors, whose sum is σ = 1031979980. Its totient is φ = 1031979978.

The previous prime is 1031979953. The next prime is 1031980021. The reversal of 1031979979 is 9799791301.

It is a weak prime.

It is an emirp because it is prime and its reverse (9799791301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1031979979 - 2⁵ = 1031979947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031979379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515989989 + 515989990.

It is an arithmetic number, because the mean of its divisors is an integer number (515989990).

Almost surely, 2^1031979979 is an apocalyptic number.

1031979979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031979979 is an equidigital number, since it uses as much as digits as its factorization.

1031979979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 964467, while the sum is 55.

The square root of 1031979979 is about 32124.4451936528. The cubic root of 1031979979 is about 1010.5483344127.

The spelling of 1031979979 in words is "one billion, thirty-one million, nine hundred seventy-nine thousand, nine hundred seventy-nine".