72103351 has 2 divisors, whose sum is σ = 72103352. Its totient is φ = 72103350.

The previous prime is 72103337. The next prime is 72103357. The reversal of 72103351 is 15330127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72103351 - 2⁵ = 72103319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72103357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36051675 + 36051676.

It is an arithmetic number, because the mean of its divisors is an integer number (36051676).

Almost surely, 2^72103351 is an apocalyptic number.

72103351 is a deficient number, since it is larger than the sum of its proper divisors (1).

72103351 is an equidigital number, since it uses as much as digits as its factorization.

72103351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 72103351 is about 8491.3692064354. The cubic root of 72103351 is about 416.2157238352.

Adding to 72103351 its reverse (15330127), we get a palindrome (87433478).

The spelling of 72103351 in words is "seventy-two million, one hundred three thousand, three hundred fifty-one".