31616993164201 has 3 divisors (see below), whose sum is σ = 31616998787101. Its totient is φ = 31616987541302.

The previous prime is 31616993164193. The next prime is 31616993164249. The reversal of 31616993164201 is 10246139961613.

The square root of 31616993164201 is 5622899.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 31616993164201 - 2³ = 31616993164193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31616993164301) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2811450 + ... + 8434348.

Almost surely, 2^{31616993164201} is an apocalyptic number.

31616993164201 is the 5622899-th square number.

31616993164201 is the 2811450-th centered octagonal number.

It is an amenable number.

31616993164201 is a deficient number, since it is larger than the sum of its proper divisors (5622900).

31616993164201 is an frugal number, since it uses more digits than its factorization.

31616993164201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11245798 (or 5622899 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 31616993164201 in words is "thirty-one trillion, six hundred sixteen billion, nine hundred ninety-three million, one hundred sixty-four thousand, two hundred one".