202423131245 has 32 divisors (see below), whose sum is σ = 248556924000. Its totient is φ = 158226804736.

The previous prime is 202423131241. The next prime is 202423131259. The reversal of 202423131245 is 542131324202.

It can be written as a sum of positive squares in 16 ways, for example, as 9810110116 + 192613021129 = 99046^2 + 438877^2 .

It is not a de Polignac number, because 202423131245 - 2² = 202423131241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202423131241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13054337 + ... + 13069833.

It is an arithmetic number, because the mean of its divisors is an integer number (7767403875).

Almost surely, 2^202423131245 is an apocalyptic number.

It is an amenable number.

202423131245 is a deficient number, since it is larger than the sum of its proper divisors (46133792755).

202423131245 is a wasteful number, since it uses less digits than its factorization.

202423131245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15937.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 202423131245 its reverse (542131324202), we get a palindrome (744554455447).

The spelling of 202423131245 in words is "two hundred two billion, four hundred twenty-three million, one hundred thirty-one thousand, two hundred forty-five".