731370061 has 2 divisors, whose sum is σ = 731370062. Its totient is φ = 731370060.

The previous prime is 731370047. The next prime is 731370067. The reversal of 731370061 is 160073137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 506520036 + 224850025 = 22506^2 + 14995^2 .

It is a cyclic number.

It is not a de Polignac number, because 731370061 - 2⁹ = 731369549 is a prime.

It is a super-2 number, since 2×731370061² = 1069804332254287442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (731370067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365685030 + 365685031.

It is an arithmetic number, because the mean of its divisors is an integer number (365685031).

Almost surely, 2^731370061 is an apocalyptic number.

It is an amenable number.

731370061 is a deficient number, since it is larger than the sum of its proper divisors (1).

731370061 is an equidigital number, since it uses as much as digits as its factorization.

731370061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 731370061 is about 27043.8544035424. The cubic root of 731370061 is about 900.9742786766.

The spelling of 731370061 in words is "seven hundred thirty-one million, three hundred seventy thousand, sixty-one".