97773549031 has 4 divisors (see below), whose sum is σ = 97777764864. Its totient is φ = 97769333200.

The previous prime is 97773549017. The next prime is 97773549053. The reversal of 97773549031 is 13094537779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13094537779 = 239 ⋅54788861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97773549031 is a prime.

It is a super-2 number, since 2×97773549031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97773549001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2072935 + ... + 2119576.

It is an arithmetic number, because the mean of its divisors is an integer number (24444441216).

Almost surely, 2^97773549031 is an apocalyptic number.

97773549031 is a deficient number, since it is larger than the sum of its proper divisors (4215833).

97773549031 is a wasteful number, since it uses less digits than its factorization.

97773549031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4215832.

The product of its (nonzero) digits is 5000940, while the sum is 55.

The spelling of 97773549031 in words is "ninety-seven billion, seven hundred seventy-three million, five hundred forty-nine thousand, thirty-one".