97219013 has 4 divisors (see below), whose sum is σ = 99053388. Its totient is φ = 95384640.

The previous prime is 97219009. The next prime is 97219033. The reversal of 97219013 is 31091279.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31091279 = 43 ⋅723053.

It can be written as a sum of positive squares in 2 ways, for example, as 72199009 + 25020004 = 8497^2 + 5002^2 .

It is a cyclic number.

It is not a de Polignac number, because 97219013 - 2² = 97219009 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97219033) 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, 917108 + ... + 917213.

It is an arithmetic number, because the mean of its divisors is an integer number (24763347).

Almost surely, 2^97219013 is an apocalyptic number.

It is an amenable number.

97219013 is a deficient number, since it is larger than the sum of its proper divisors (1834375).

97219013 is a wasteful number, since it uses less digits than its factorization.

97219013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834374.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 97219013 is about 9859.9702332208. The cubic root of 97219013 is about 459.8156365788.

It can be divided in two parts, 9721901 and 3, that multiplied together give a triangular number (29165703 = T₇₆₃₇).

The spelling of 97219013 in words is "ninety-seven million, two hundred nineteen thousand, thirteen".