245120422531 has 4 divisors (see below), whose sum is σ = 251098969464. Its totient is φ = 239141875600.

The previous prime is 245120422529. The next prime is 245120422553. The reversal of 245120422531 is 135224021542.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245120422531 - 2¹ = 245120422529 is a prime.

It is a super-2 number, since 2×245120422531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245120422493 and 245120422502.

It is not an unprimeable number, because it can be changed into a prime (245120426531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2989273405 + ... + 2989273486.

It is an arithmetic number, because the mean of its divisors is an integer number (62774742366).

Almost surely, 2^245120422531 is an apocalyptic number.

245120422531 is a deficient number, since it is larger than the sum of its proper divisors (5978546933).

245120422531 is an equidigital number, since it uses as much as digits as its factorization.

245120422531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978546932.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 245120422531 in words is "two hundred forty-five billion, one hundred twenty million, four hundred twenty-two thousand, five hundred thirty-one".