131433330 has 64 divisors (see below), whose sum is σ = 361444608. Its totient is φ = 29963520.

The previous prime is 131433329. The next prime is 131433353. The reversal of 131433330 is 33334131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 131433297 and 131433306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128220 + ... + 129240.

It is an arithmetic number, because the mean of its divisors is an integer number (5647572).

Almost surely, 2^131433330 is an apocalyptic number.

131433330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131433330 is an abundant number, since it is smaller than the sum of its proper divisors (230011278).

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

131433330 is a wasteful number, since it uses less digits than its factorization.

131433330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 131433330 is about 11464.4376224916. The cubic root of 131433330 is about 508.4346853958.

Adding to 131433330 its reverse (33334131), we get a palindrome (164767461).

The spelling of 131433330 in words is "one hundred thirty-one million, four hundred thirty-three thousand, three hundred thirty".