1011031001129 has 4 divisors (see below), whose sum is σ = 1011133125060. Its totient is φ = 1010928877200.

The previous prime is 1011031001111. The next prime is 1011031001147. The reversal of 1011031001129 is 9211001301101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1011031001111) and next prime (1011031001147).

It can be written as a sum of positive squares in 2 ways, for example, as 927902578729 + 83128422400 = 963277^2 + 288320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011031001129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011031001129.

It is not an unprimeable number, because it can be changed into a prime (1011031000129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51047114 + ... + 51066915.

It is an arithmetic number, because the mean of its divisors is an integer number (252783281265).

Almost surely, 2^{1011031001129} is an apocalyptic number.

It is an amenable number.

1011031001129 is a deficient number, since it is larger than the sum of its proper divisors (102123931).

1011031001129 is an equidigital number, since it uses as much as digits as its factorization.

1011031001129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102123930.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 1011031001129 in words is "one trillion, eleven billion, thirty-one million, one thousand, one hundred twenty-nine".