126540603231 has 32 divisors (see below), whose sum is σ = 203516797440. Its totient is φ = 68319448704.

The previous prime is 126540603227. The next prime is 126540603239. The reversal of 126540603231 is 132306045621.

It is not a de Polignac number, because 126540603231 - 2² = 126540603227 is a prime.

It is a super-2 number, since 2×126540603231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126540603192 and 126540603201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126540603239) 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, 276300 + ... + 573953.

It is an arithmetic number, because the mean of its divisors is an integer number (6359899920).

Almost surely, 2^126540603231 is an apocalyptic number.

126540603231 is a deficient number, since it is larger than the sum of its proper divisors (76976194209).

126540603231 is a wasteful number, since it uses less digits than its factorization.

126540603231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850655.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 126540603231 its reverse (132306045621), we get a palindrome (258846648852).

The spelling of 126540603231 in words is "one hundred twenty-six billion, five hundred forty million, six hundred three thousand, two hundred thirty-one".