1031129979 has 16 divisors (see below), whose sum is σ = 1506385920. Its totient is φ = 622193760.

The previous prime is 1031129971. The next prime is 1031129989. The reversal of 1031129979 is 9799211301.

It is not a de Polignac number, because 1031129979 - 2³ = 1031129971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031129979.

It is not an unprimeable number, because it can be changed into a prime (1031129971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60667 + ... + 75780.

It is an arithmetic number, because the mean of its divisors is an integer number (94149120).

Almost surely, 2^1031129979 is an apocalyptic number.

1031129979 is a deficient number, since it is larger than the sum of its proper divisors (475255941).

1031129979 is a wasteful number, since it uses less digits than its factorization.

1031129979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136690.

The product of its (nonzero) digits is 30618, while the sum is 42.

The square root of 1031129979 is about 32111.2126678517. The cubic root of 1031129979 is about 1010.2708089950.

The spelling of 1031129979 in words is "one billion, thirty-one million, one hundred twenty-nine thousand, nine hundred seventy-nine".