11402131 has 8 divisors (see below), whose sum is σ = 12311264. Its totient is φ = 10497600.

The previous prime is 11402129. The next prime is 11402159. The reversal of 11402131 is 13120411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 8-Lehmer number, since φ(11402131) divides (11402131-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 11402131 - 2¹ = 11402129 is a prime.

It is a super-2 number, since 2×11402131² = 260017182682322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11402231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5431 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (1538908).

Almost surely, 2^11402131 is an apocalyptic number.

11402131 is a deficient number, since it is larger than the sum of its proper divisors (909133).

11402131 is a wasteful number, since it uses less digits than its factorization.

11402131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 11402131 is about 3376.7041623453. The cubic root of 11402131 is about 225.0757341761.

Adding to 11402131 its reverse (13120411), we get a palindrome (24522542).

The spelling of 11402131 in words is "eleven million, four hundred two thousand, one hundred thirty-one".