131194406 has 32 divisors (see below), whose sum is σ = 242196480. Its totient is φ = 52016256.

The previous prime is 131194403. The next prime is 131194409. The reversal of 131194406 is 604491131.

131194406 = 1208² + 1209² + ... + 1291².

It is an interprime number because it is at equal distance from previous prime (131194403) and next prime (131194409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131194403) 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, 9371 + ... + 18713.

It is an arithmetic number, because the mean of its divisors is an integer number (7568640).

Almost surely, 2^131194406 is an apocalyptic number.

131194406 is a deficient number, since it is larger than the sum of its proper divisors (111002074).

131194406 is a wasteful number, since it uses less digits than its factorization.

131194406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9428.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 131194406 is about 11454.0126593260. The cubic root of 131194406 is about 508.1264152087.

The spelling of 131194406 in words is "one hundred thirty-one million, one hundred ninety-four thousand, four hundred six".