228810131197 has 4 divisors (see below), whose sum is σ = 228812774400. Its totient is φ = 228807487996.

The previous prime is 228810131189. The next prime is 228810131257. The reversal of 228810131197 is 791131018822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 791131018822 = 2 ⋅395565509411.

It is a cyclic number.

It is not a de Polignac number, because 228810131197 - 2³ = 228810131189 is a prime.

It is a super-2 number, since 2×228810131197² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228810131497) 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, 1187197 + ... + 1366402.

It is an arithmetic number, because the mean of its divisors is an integer number (57203193600).

Almost surely, 2^228810131197 is an apocalyptic number.

It is an amenable number.

228810131197 is a deficient number, since it is larger than the sum of its proper divisors (2643203).

228810131197 is an equidigital number, since it uses as much as digits as its factorization.

228810131197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643202.

The product of its (nonzero) digits is 48384, while the sum is 43.

The spelling of 228810131197 in words is "two hundred twenty-eight billion, eight hundred ten million, one hundred thirty-one thousand, one hundred ninety-seven".