240023431323121 has 2 divisors, whose sum is σ = 240023431323122. Its totient is φ = 240023431323120.

The previous prime is 240023431323107. The next prime is 240023431323131. The reversal of 240023431323121 is 121323134320042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234314504802225 + 5708926520896 = 15307335^2 + 2389336^2 .

It is a cyclic number.

It is not a de Polignac number, because 240023431323121 - 2⁷ = 240023431322993 is a prime.

It is a super-2 number, since 2×240023431323121² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240023431323131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120011715661560 + 120011715661561.

It is an arithmetic number, because the mean of its divisors is an integer number (120011715661561).

Almost surely, 2^{240023431323121} is an apocalyptic number.

It is an amenable number.

240023431323121 is a deficient number, since it is larger than the sum of its proper divisors (1).

240023431323121 is an equidigital number, since it uses as much as digits as its factorization.

240023431323121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 240023431323121 its reverse (121323134320042), we get a palindrome (361346565643163).

The spelling of 240023431323121 in words is "two hundred forty trillion, twenty-three billion, four hundred thirty-one million, three hundred twenty-three thousand, one hundred twenty-one".