1231892803140 has 48 divisors (see below), whose sum is σ = 3467359042560. Its totient is φ = 326784824320.

The previous prime is 1231892803067. The next prime is 1231892803153. The reversal of 1231892803140 is 413082981321.

It is a junction number, because it is equal to n+sod(n) for n = 1231892803092 and 1231892803101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53736045 + ... + 53758964.

It is an arithmetic number, because the mean of its divisors is an integer number (72236646720).

Almost surely, 2^{1231892803140} is an apocalyptic number.

1231892803140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231892803140 is an abundant number, since it is smaller than the sum of its proper divisors (2235466239420).

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

1231892803140 is a wasteful number, since it uses less digits than its factorization.

1231892803140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107495212 (or 107495210 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 1231892803140 in words is "one trillion, two hundred thirty-one billion, eight hundred ninety-two million, eight hundred three thousand, one hundred forty".