10857631 has 2 divisors, whose sum is σ = 10857632. Its totient is φ = 10857630.

The previous prime is 10857521. The next prime is 10857641. The reversal of 10857631 is 13675801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10857631 - 2⁷ = 10857503 is a prime.

It is a super-2 number, since 2×10857631² = 235776301864322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10857593 and 10857602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10857641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5428815 + 5428816.

It is an arithmetic number, because the mean of its divisors is an integer number (5428816).

Almost surely, 2^10857631 is an apocalyptic number.

10857631 is a deficient number, since it is larger than the sum of its proper divisors (1).

10857631 is an equidigital number, since it uses as much as digits as its factorization.

10857631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 10857631 is about 3295.0919562282. The cubic root of 10857631 is about 221.4343674812.

It can be divided in two parts, 1085763 and 1, that added together give a square (1085764 = 1042²).

The spelling of 10857631 in words is "ten million, eight hundred fifty-seven thousand, six hundred thirty-one".