123540311434 has 16 divisors (see below), whose sum is σ = 186159465216. Its totient is φ = 61487780400.

The previous prime is 123540311429. The next prime is 123540311459. The reversal of 123540311434 is 434113045321.

123540311434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×123540311434² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123540311396 and 123540311405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241539 + ... + 552649.

It is an arithmetic number, because the mean of its divisors is an integer number (11634966576).

Almost surely, 2^123540311434 is an apocalyptic number.

123540311434 is a deficient number, since it is larger than the sum of its proper divisors (62619153782).

123540311434 is a wasteful number, since it uses less digits than its factorization.

123540311434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312021.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 123540311434 its reverse (434113045321), we get a palindrome (557653356755).

The spelling of 123540311434 in words is "one hundred twenty-three billion, five hundred forty million, three hundred eleven thousand, four hundred thirty-four".