1203696431161 has 9 divisors (see below), whose sum is σ = 1400227231311. Its totient is φ = 1031733215352.

The previous prime is 1203696431159. The next prime is 1203696431173. The reversal of 1203696431161 is 1611346963021.

The square root of 1203696431161 is 1097131.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 558958093225 + 644738337936 = 747635^2 + 802956^2 .

It is not a de Polignac number, because 1203696431161 - 2¹ = 1203696431159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203696431261) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7601551 + ... + 7758283.

It is an arithmetic number, because the mean of its divisors is an integer number (155580803479).

Almost surely, 2^{1203696431161} is an apocalyptic number.

1203696431161 is the 1097131-st square number.

1203696431161 is the 548566-th centered octagonal number.

It is an amenable number.

1203696431161 is a deficient number, since it is larger than the sum of its proper divisors (196530800150).

1203696431161 is an frugal number, since it uses more digits than its factorization.

1203696431161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313480 (or 156740 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 1203696431161 in words is "one trillion, two hundred three billion, six hundred ninety-six million, four hundred thirty-one thousand, one hundred sixty-one".