1000311123020 has 48 divisors (see below), whose sum is σ = 2293098238368. Its totient is φ = 363515151360.

The previous prime is 1000311122977. The next prime is 1000311123023. The reversal of 1000311123020 is 203211130001.

It is a junction number, because it is equal to n+sod(n) for n = 1000311122986 and 1000311123004.

It is not an unprimeable number, because it can be changed into a prime (1000311123023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1122239 + ... + 1805558.

It is an arithmetic number, because the mean of its divisors is an integer number (47772879966).

Almost surely, 2^{1000311123020} is an apocalyptic number.

1000311123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000311123020 is an abundant number, since it is smaller than the sum of its proper divisors (1292787115348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000311123020 is a wasteful number, since it uses less digits than its factorization.

1000311123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929370 (or 2929368 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1000311123020 its reverse (203211130001), we get a palindrome (1203522253021).

The spelling of 1000311123020 in words is "one trillion, three hundred eleven million, one hundred twenty-three thousand, twenty".