31452023401021 has 2 divisors, whose sum is σ = 31452023401022. Its totient is φ = 31452023401020.

The previous prime is 31452023400971. The next prime is 31452023401031. The reversal of 31452023401021 is 12010432025413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18859816298521 + 12592207102500 = 4342789^2 + 3548550^2 .

It is a cyclic number.

It is not a de Polignac number, because 31452023401021 - 2³⁹ = 30902267587133 is a prime.

It is a super-3 number, since 3×31452023401021³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31452023401031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15726011700510 + 15726011700511.

It is an arithmetic number, because the mean of its divisors is an integer number (15726011700511).

Almost surely, 2^{31452023401021} is an apocalyptic number.

It is an amenable number.

31452023401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

31452023401021 is an equidigital number, since it uses as much as digits as its factorization.

31452023401021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 31452023401021 its reverse (12010432025413), we get a palindrome (43462455426434).

The spelling of 31452023401021 in words is "thirty-one trillion, four hundred fifty-two billion, twenty-three million, four hundred one thousand, twenty-one".