2101193128731 has 16 divisors (see below), whose sum is σ = 2821876198400. Its totient is φ = 1390653668448.

The previous prime is 2101193128693. The next prime is 2101193128819. The reversal of 2101193128731 is 1378213911012.

It is not a de Polignac number, because 2101193128731 - 2⁶ = 2101193128667 is a prime.

It is a super-2 number, since 2×2101193128731² (a number of 25 digits) contains 22 as substring.

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 2101193128731.

It is not an unprimeable number, because it can be changed into a prime (2101193124731) 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, 9999510 + ... + 10207476.

It is an arithmetic number, because the mean of its divisors is an integer number (176367262400).

Almost surely, 2^{2101193128731} is an apocalyptic number.

2101193128731 is a deficient number, since it is larger than the sum of its proper divisors (720683069669).

2101193128731 is a wasteful number, since it uses less digits than its factorization.

2101193128731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232338.

The product of its (nonzero) digits is 18144, while the sum is 39.

The spelling of 2101193128731 in words is "two trillion, one hundred one billion, one hundred ninety-three million, one hundred twenty-eight thousand, seven hundred thirty-one".