1402134431 has 4 divisors (see below), whose sum is σ = 1475931000. Its totient is φ = 1328337864.

The previous prime is 1402134421. The next prime is 1402134463. The reversal of 1402134431 is 1344312041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1344312041 = 15541 ⋅86501.

It is a cyclic number.

It is not a de Polignac number, because 1402134431 - 2⁶ = 1402134367 is a prime.

It is a super-2 number, since 2×1402134431² = 3931961925191387522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1402134397 and 1402134406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402134421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36898256 + ... + 36898293.

It is an arithmetic number, because the mean of its divisors is an integer number (368982750).

Almost surely, 2^1402134431 is an apocalyptic number.

1402134431 is a deficient number, since it is larger than the sum of its proper divisors (73796569).

1402134431 is an equidigital number, since it uses as much as digits as its factorization.

1402134431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73796568.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1402134431 is about 37445.0855386925. The cubic root of 1402134431 is about 1119.2571687308.

Adding to 1402134431 its reverse (1344312041), we get a palindrome (2746446472).

The spelling of 1402134431 in words is "one billion, four hundred two million, one hundred thirty-four thousand, four hundred thirty-one".