2102731572104 has 8 divisors (see below), whose sum is σ = 3942621697710. Its totient is φ = 1051365786048.

The previous prime is 2102731572101. The next prime is 2102731572107. The reversal of 2102731572104 is 4012751372012.

It is an interprime number because it is at equal distance from previous prime (2102731572101) and next prime (2102731572107).

It can be written as a sum of positive squares in only one way, i.e., 2093803212004 + 8928360100 = 1446998^2 + 94490^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2102731572101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131420723249 + ... + 131420723264.

Almost surely, 2^{2102731572104} is an apocalyptic number.

It is an amenable number.

2102731572104 is a deficient number, since it is larger than the sum of its proper divisors (1839890125606).

2102731572104 is a wasteful number, since it uses less digits than its factorization.

2102731572104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262841446519 (or 262841446515 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 2102731572104 in words is "two trillion, one hundred two billion, seven hundred thirty-one million, five hundred seventy-two thousand, one hundred four".