928131401 has 2 divisors, whose sum is σ = 928131402. Its totient is φ = 928131400.

The previous prime is 928131359. The next prime is 928131431. The reversal of 928131401 is 104131829.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 771506176 + 156625225 = 27776^2 + 12515^2 .

It is an emirp because it is prime and its reverse (104131829) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-928131401 is a prime.

It is a super-2 number, since 2×928131401² = 1722855795044445602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (928131431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 464065700 + 464065701.

It is an arithmetic number, because the mean of its divisors is an integer number (464065701).

Almost surely, 2^928131401 is an apocalyptic number.

It is an amenable number.

928131401 is a deficient number, since it is larger than the sum of its proper divisors (1).

928131401 is an equidigital number, since it uses as much as digits as its factorization.

928131401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 928131401 is about 30465.2490716882. The cubic root of 928131401 is about 975.4458275808.

The spelling of 928131401 in words is "nine hundred twenty-eight million, one hundred thirty-one thousand, four hundred one".