1931331275144 has 8 divisors (see below), whose sum is σ = 3621246140910. Its totient is φ = 965665637568.

The previous prime is 1931331275129. The next prime is 1931331275261. The reversal of 1931331275144 is 4415721331391.

It can be written as a sum of positive squares in only one way, i.e., 1835130808900 + 96200466244 = 1354670^2 + 310162^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1931331275095 and 1931331275104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120708204689 + ... + 120708204704.

Almost surely, 2^{1931331275144} is an apocalyptic number.

It is an amenable number.

1931331275144 is a deficient number, since it is larger than the sum of its proper divisors (1689914865766).

1931331275144 is a wasteful number, since it uses less digits than its factorization.

1931331275144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241416409399 (or 241416409395 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The spelling of 1931331275144 in words is "one trillion, nine hundred thirty-one billion, three hundred thirty-one million, two hundred seventy-five thousand, one hundred forty-four".