1931311404077 has 16 divisors (see below), whose sum is σ = 2285229832704. Its totient is φ = 1612155072000.

The previous prime is 1931311404059. The next prime is 1931311404097. The reversal of 1931311404077 is 7704041131391.

It is not a de Polignac number, because 1931311404077 - 2¹² = 1931311399981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1931311404007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125941949 + ... + 125957282.

It is an arithmetic number, because the mean of its divisors is an integer number (142826864544).

Almost surely, 2^{1931311404077} is an apocalyptic number.

1931311404077 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1931311404077 is a deficient number, since it is larger than the sum of its proper divisors (353918428627).

1931311404077 is a wasteful number, since it uses less digits than its factorization.

1931311404077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251899300.

The product of its (nonzero) digits is 63504, while the sum is 41.

The spelling of 1931311404077 in words is "one trillion, nine hundred thirty-one billion, three hundred eleven million, four hundred four thousand, seventy-seven".