1232981871971 has 4 divisors (see below), whose sum is σ = 1286589779472. Its totient is φ = 1179373964472.

The previous prime is 1232981871967. The next prime is 1232981871973. The reversal of 1232981871971 is 1791781892321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1232981871971 - 2² = 1232981871967 is a prime.

It is a super-2 number, since 2×1232981871971² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1232981871971.

It is not an unprimeable number, because it can be changed into a prime (1232981871973) 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, 26803953716 + ... + 26803953761.

It is an arithmetic number, because the mean of its divisors is an integer number (321647444868).

Almost surely, 2^{1232981871971} is an apocalyptic number.

1232981871971 is a deficient number, since it is larger than the sum of its proper divisors (53607907501).

1232981871971 is an equidigital number, since it uses as much as digits as its factorization.

1232981871971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53607907500.

The product of its digits is 3048192, while the sum is 59.

The spelling of 1232981871971 in words is "one trillion, two hundred thirty-two billion, nine hundred eighty-one million, eight hundred seventy-one thousand, nine hundred seventy-one".