253631047 has 2 divisors, whose sum is σ = 253631048. Its totient is φ = 253631046.

The previous prime is 253631033. The next prime is 253631069. The reversal of 253631047 is 740136352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253631047 - 2⁷ = 253630919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253631017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126815523 + 126815524.

It is an arithmetic number, because the mean of its divisors is an integer number (126815524).

Almost surely, 2^253631047 is an apocalyptic number.

253631047 is a deficient number, since it is larger than the sum of its proper divisors (1).

253631047 is an equidigital number, since it uses as much as digits as its factorization.

253631047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 253631047 is about 15925.7981589621. The cubic root of 253631047 is about 632.9957655987.

Adding to 253631047 its reverse (740136352), we get a palindrome (993767399).

The spelling of 253631047 in words is "two hundred fifty-three million, six hundred thirty-one thousand, forty-seven".