1131401402 has 8 divisors (see below), whose sum is σ = 1708492500. Its totient is φ = 561903904.

The previous prime is 1131401393. The next prime is 1131401407. The reversal of 1131401402 is 2041041311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1130237161 + 1164241 = 33619^2 + 1079^2 .

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

It is a super-3 number, since 3×1131401402³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131401407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898027 + ... + 1898622.

Almost surely, 2^1131401402 is an apocalyptic number.

1131401402 is a deficient number, since it is larger than the sum of its proper divisors (577091098).

1131401402 is a wasteful number, since it uses less digits than its factorization.

1131401402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796800.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1131401402 is about 33636.3107667889. The cubic root of 1131401402 is about 1042.0108414083.

Adding to 1131401402 its reverse (2041041311), we get a palindrome (3172442713).

The spelling of 1131401402 in words is "one billion, one hundred thirty-one million, four hundred one thousand, four hundred two".