45020431 has 2 divisors, whose sum is σ = 45020432. Its totient is φ = 45020430.

The previous prime is 45020429. The next prime is 45020467. The reversal of 45020431 is 13402054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45020431 - 2¹ = 45020429 is a prime.

It is a super-2 number, since 2×45020431² = 4053678414851522, which contains 22 as substring.

Together with 45020429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45020399 and 45020408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45020411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22510215 + 22510216.

It is an arithmetic number, because the mean of its divisors is an integer number (22510216).

Almost surely, 2^45020431 is an apocalyptic number.

45020431 is a deficient number, since it is larger than the sum of its proper divisors (1).

45020431 is an equidigital number, since it uses as much as digits as its factorization.

45020431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 45020431 is about 6709.7265965164. The cubic root of 45020431 is about 355.7431525911.

Adding to 45020431 its reverse (13402054), we get a palindrome (58422485).

It can be divided in two parts, 45020 and 431, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 45020431 in words is "forty-five million, twenty thousand, four hundred thirty-one".