97342781 has 4 divisors (see below), whose sum is σ = 99413952. Its totient is φ = 95271612.

The previous prime is 97342753. The next prime is 97342783. The reversal of 97342781 is 18724379.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18724379 = 773 ⋅24223.

It is a cyclic number.

It is not a de Polignac number, because 97342781 - 2⁶ = 97342717 is a prime.

It is a super-2 number, since 2×97342781² = 18951234025627922, which 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 (97342783) 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, 1035515 + ... + 1035608.

It is an arithmetic number, because the mean of its divisors is an integer number (24853488).

Almost surely, 2^97342781 is an apocalyptic number.

It is an amenable number.

97342781 is a deficient number, since it is larger than the sum of its proper divisors (2071171).

97342781 is a wasteful number, since it uses less digits than its factorization.

97342781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071170.

The product of its digits is 84672, while the sum is 41.

The square root of 97342781 is about 9866.2445236270. The cubic root of 97342781 is about 460.0106818565.

The spelling of 97342781 in words is "ninety-seven million, three hundred forty-two thousand, seven hundred eighty-one".