131111430 has 32 divisors (see below), whose sum is σ = 316034784. Its totient is φ = 34811136.

The previous prime is 131111389. The next prime is 131111437. The reversal of 131111430 is 34111131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131111437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2389 + ... + 16368.

It is an arithmetic number, because the mean of its divisors is an integer number (9876087).

Almost surely, 2^131111430 is an apocalyptic number.

131111430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131111430 is an abundant number, since it is smaller than the sum of its proper divisors (184923354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131111430 is a wasteful number, since it uses less digits than its factorization.

131111430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19000.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 131111430 is about 11450.3899496917. The cubic root of 131111430 is about 508.0192683910.

Adding to 131111430 its reverse (34111131), we get a palindrome (165222561).

It can be divided in two parts, 13111 and 1430, that added together give a palindrome (14541).

The spelling of 131111430 in words is "one hundred thirty-one million, one hundred eleven thousand, four hundred thirty".