1406612331 has 16 divisors (see below), whose sum is σ = 2087504800. Its totient is φ = 936105984.

The previous prime is 1406612303. The next prime is 1406612377. The reversal of 1406612331 is 1332166041.

1406612331 is a `hidden beast` number, since 1 + 40 + 6 + 612 + 3 + 3 + 1 = 666.

It is not a de Polignac number, because 1406612331 - 2⁶ = 1406612267 is a prime.

It is a super-2 number, since 2×1406612331² = 3957116499442507122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1406612295 and 1406612304.

It is not an unprimeable number, because it can be changed into a prime (1406612231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29566 + ... + 60723.

It is an arithmetic number, because the mean of its divisors is an integer number (130469050).

Almost surely, 2^1406612331 is an apocalyptic number.

1406612331 is a deficient number, since it is larger than the sum of its proper divisors (680892469).

1406612331 is an equidigital number, since it uses as much as digits as its factorization.

1406612331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90875 (or 90869 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1406612331 is about 37504.8307688490. The cubic root of 1406612331 is about 1120.4474007090.

Adding to 1406612331 its reverse (1332166041), we get a palindrome (2738778372).

The spelling of 1406612331 in words is "one billion, four hundred six million, six hundred twelve thousand, three hundred thirty-one".