2031457 has 2 divisors, whose sum is σ = 2031458. Its totient is φ = 2031456.

The previous prime is 2031443. The next prime is 2031467. The reversal of 2031457 is 7541302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1838736 + 192721 = 1356^2 + 439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031457 is a prime.

2031457 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2031467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015728 + 1015729.

It is an arithmetic number, because the mean of its divisors is an integer number (1015729).

2^2031457 is an apocalyptic number.

It is an amenable number.

2031457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031457 is an equidigital number, since it uses as much as digits as its factorization.

2031457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 2031457 is about 1425.2918999279. The cubic root of 2031457 is about 126.6492273621.

Adding to 2031457 its reverse (7541302), we get a palindrome (9572759).

The spelling of 2031457 in words is "two million, thirty-one thousand, four hundred fifty-seven".