31836194329 has 9 divisors (see below), whose sum is σ = 32140778943. Its totient is φ = 31534474272.

The previous prime is 31836194317. The next prime is 31836194387. The reversal of 31836194329 is 92349163813.

The square root of 31836194329 is 178427.

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., 560979225 + 31275215104 = 23685^2 + 176848^2 .

It is not a de Polignac number, because 31836194329 - 2⁵ = 31836194297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31836894329) 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, 20161462 + ... + 20163040.

Almost surely, 2^31836194329 is an apocalyptic number.

31836194329 is the 178427-th square number.

31836194329 is the 89214-th centered octagonal number.

It is an amenable number.

31836194329 is a deficient number, since it is larger than the sum of its proper divisors (304584614).

31836194329 is an frugal number, since it uses more digits than its factorization.

31836194329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384 (or 1692 counting only the distinct ones).

The product of its digits is 839808, while the sum is 49.

Multiplying 31836194329 by its sum of digits (49), we get a square (1559973522121 = 1248989²).

The spelling of 31836194329 in words is "thirty-one billion, eight hundred thirty-six million, one hundred ninety-four thousand, three hundred twenty-nine".