111440131402 has 4 divisors (see below), whose sum is σ = 167160197106. Its totient is φ = 55720065700.

The previous prime is 111440131307. The next prime is 111440131427. The reversal of 111440131402 is 204131044111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204131044111 = 71537 ⋅2853503.

It can be written as a sum of positive squares in only one way, i.e., 76452803001 + 34987328401 = 276501^2 + 187049^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27860032849 + ... + 27860032852.

Almost surely, 2^111440131402 is an apocalyptic number.

111440131402 is a deficient number, since it is larger than the sum of its proper divisors (55720065704).

111440131402 is an equidigital number, since it uses as much as digits as its factorization.

111440131402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55720065703.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 111440131402 its reverse (204131044111), we get a palindrome (315571175513).

The spelling of 111440131402 in words is "one hundred eleven billion, four hundred forty million, one hundred thirty-one thousand, four hundred two".