1402897331 has 4 divisors (see below), whose sum is σ = 1530433464. Its totient is φ = 1275361200.

The previous prime is 1402897303. The next prime is 1402897411. The reversal of 1402897331 is 1337982041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1402897331 - 2¹⁸ = 1402635187 is a prime.

It is a super-2 number, since 2×1402897331² = 3936241842653847122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402897631) 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, 63768050 + ... + 63768071.

It is an arithmetic number, because the mean of its divisors is an integer number (382608366).

Almost surely, 2^1402897331 is an apocalyptic number.

1402897331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1402897331 is a deficient number, since it is larger than the sum of its proper divisors (127536133).

1402897331 is a wasteful number, since it uses less digits than its factorization.

1402897331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127536132.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1402897331 is about 37455.2710709721. The cubic root of 1402897331 is about 1119.4601275096.

The spelling of 1402897331 in words is "one billion, four hundred two million, eight hundred ninety-seven thousand, three hundred thirty-one".