23151437 has 2 divisors, whose sum is σ = 23151438. Its totient is φ = 23151436.

The previous prime is 23151431. The next prime is 23151473. The reversal of 23151437 is 73415132.

Together with next prime (23151473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20241001 + 2910436 = 4499^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 23151437 - 2⁴ = 23151421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23151431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11575718 + 11575719.

It is an arithmetic number, because the mean of its divisors is an integer number (11575719).

Almost surely, 2^23151437 is an apocalyptic number.

It is an amenable number.

23151437 is a deficient number, since it is larger than the sum of its proper divisors (1).

23151437 is an equidigital number, since it uses as much as digits as its factorization.

23151437 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23151437 is about 4811.5940186179. The cubic root of 23151437 is about 285.0094877318.

Adding to 23151437 its reverse (73415132), we get a palindrome (96566569).

The spelling of 23151437 in words is "twenty-three million, one hundred fifty-one thousand, four hundred thirty-seven".