1131401402320 has 80 divisors (see below), whose sum is σ = 3007555004160. Its totient is φ = 387746491392.

The previous prime is 1131401402309. The next prime is 1131401402333. The reversal of 1131401402320 is 232041041311.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1131401402291 and 1131401402300.

It is a congruent number.

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, 917941 + ... + 1762219.

It is an arithmetic number, because the mean of its divisors is an integer number (37594437552).

Almost surely, 2^{1131401402320} is an apocalyptic number.

1131401402320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131401402320 is an abundant number, since it is smaller than the sum of its proper divisors (1876153601840).

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

1131401402320 is a wasteful number, since it uses less digits than its factorization.

1131401402320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846692 (or 846686 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1131401402320 its reverse (232041041311), we get a palindrome (1363442443631).

The spelling of 1131401402320 in words is "one trillion, one hundred thirty-one billion, four hundred one million, four hundred two thousand, three hundred twenty".