131402356 has 6 divisors (see below), whose sum is σ = 229954130. Its totient is φ = 65701176.

The previous prime is 131402351. The next prime is 131402371. The reversal of 131402356 is 653204131.

It can be written as a sum of positive squares in only one way, i.e., 131331600 + 70756 = 11460^2 + 266^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131402356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131402351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16425291 + ... + 16425298.

Almost surely, 2^131402356 is an apocalyptic number.

It is an amenable number.

131402356 is a deficient number, since it is larger than the sum of its proper divisors (98551774).

131402356 is a wasteful number, since it uses less digits than its factorization.

131402356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32850593 (or 32850591 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 131402356 is about 11463.0866698285. The cubic root of 131402356 is about 508.3947424752.

Adding to 131402356 its reverse (653204131), we get a palindrome (784606487).

The spelling of 131402356 in words is "one hundred thirty-one million, four hundred two thousand, three hundred fifty-six".