10237981 has 4 divisors (see below), whose sum is σ = 11025532. Its totient is φ = 9450432.

The previous prime is 10237949. The next prime is 10237991. The reversal of 10237981 is 18973201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 416025 + 9821956 = 645^2 + 3134^2 .

It is a cyclic number.

It is not a de Polignac number, because 10237981 - 2⁵ = 10237949 is a prime.

It is a super-2 number, since 2×10237981² = 209632509912722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10237901) 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 in 3 ways as a sum of consecutive naturals, for example, 393756 + ... + 393781.

It is an arithmetic number, because the mean of its divisors is an integer number (2756383).

Almost surely, 2^10237981 is an apocalyptic number.

It is an amenable number.

10237981 is a deficient number, since it is larger than the sum of its proper divisors (787551).

10237981 is an equidigital number, since it uses as much as digits as its factorization.

10237981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787550.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 10237981 is about 3199.6845156984. The cubic root of 10237981 is about 217.1391364906.

It can be divided in two parts, 102 and 37981, that added together give a palindrome (38083).

The spelling of 10237981 in words is "ten million, two hundred thirty-seven thousand, nine hundred eighty-one".