23405111131534 has 16 divisors (see below), whose sum is σ = 39964458533760. Its totient is φ = 10176135274360.

The previous prime is 23405111131499. The next prime is 23405111131537. The reversal of 23405111131534 is 43513111150432.

It is a self number, because there is not a number n which added to its sum of digits gives 23405111131534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23405111131537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23127579664 + ... + 23127580675.

It is an arithmetic number, because the mean of its divisors is an integer number (2497778658360).

Almost surely, 2^{23405111131534} is an apocalyptic number.

23405111131534 is a deficient number, since it is larger than the sum of its proper divisors (16559347402226).

23405111131534 is a wasteful number, since it uses less digits than its factorization.

23405111131534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46255160375.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 23405111131534 its reverse (43513111150432), we get a palindrome (66918222281966).

The spelling of 23405111131534 in words is "twenty-three trillion, four hundred five billion, one hundred eleven million, one hundred thirty-one thousand, five hundred thirty-four".