45451321031 has 2 divisors, whose sum is σ = 45451321032. Its totient is φ = 45451321030.

The previous prime is 45451320919. The next prime is 45451321037. The reversal of 45451321031 is 13012315454.

45451321031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45451321031 - 2²² = 45447126727 is a prime.

It is a super-2 number, since 2×45451321031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45451320985 and 45451321003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45451321037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22725660515 + 22725660516.

It is an arithmetic number, because the mean of its divisors is an integer number (22725660516).

Almost surely, 2^45451321031 is an apocalyptic number.

45451321031 is a deficient number, since it is larger than the sum of its proper divisors (1).

45451321031 is an equidigital number, since it uses as much as digits as its factorization.

45451321031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 45451321031 its reverse (13012315454), we get a palindrome (58463636485).

The spelling of 45451321031 in words is "forty-five billion, four hundred fifty-one million, three hundred twenty-one thousand, thirty-one".