240121231 has 12 divisors (see below), whose sum is σ = 282052848. Its totient is φ = 200247552.

The previous prime is 240121229. The next prime is 240121237. The reversal of 240121231 is 132121042.

240121231 = T₃₆₅ + T₃₆₆ + ... + T₁₁₄₁.

It is not a de Polignac number, because 240121231 - 2¹ = 240121229 is a prime.

It is a super-2 number, since 2×240121231² = 115316411153910722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240121237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2946 + ... + 22111.

It is an arithmetic number, because the mean of its divisors is an integer number (23504404).

Almost surely, 2^240121231 is an apocalyptic number.

240121231 is a deficient number, since it is larger than the sum of its proper divisors (41931617).

240121231 is an equidigital number, since it uses as much as digits as its factorization.

240121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25138 (or 25101 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 240121231 is about 15495.8456045483. The cubic root of 240121231 is about 621.5511204951.

Adding to 240121231 its reverse (132121042), we get a palindrome (372242273).

It can be divided in two parts, 2401 and 21231, that added together give a palindrome (23632).

The spelling of 240121231 in words is "two hundred forty million, one hundred twenty-one thousand, two hundred thirty-one".