354103721 has 2 divisors, whose sum is σ = 354103722. Its totient is φ = 354103720.

The previous prime is 354103697. The next prime is 354103733. The reversal of 354103721 is 127301453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353853721 + 250000 = 18811^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 354103721 - 2⁶ = 354103657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (354103121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177051860 + 177051861.

It is an arithmetic number, because the mean of its divisors is an integer number (177051861).

Almost surely, 2^354103721 is an apocalyptic number.

It is an amenable number.

354103721 is a deficient number, since it is larger than the sum of its proper divisors (1).

354103721 is an equidigital number, since it uses as much as digits as its factorization.

354103721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 354103721 is about 18817.6438748319. The cubic root of 354103721 is about 707.4734779271.

The spelling of 354103721 in words is "three hundred fifty-four million, one hundred three thousand, seven hundred twenty-one".