3135897381 has 4 divisors (see below), whose sum is σ = 4181196512. Its totient is φ = 2090598252.

The previous prime is 3135897353. The next prime is 3135897431. The reversal of 3135897381 is 1837985313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3135897381 - 2¹¹ = 3135895333 is a prime.

It is a super-2 number, since 2×3135897381² = 19667704768325318322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3135897381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3135897301) 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, 522649561 + ... + 522649566.

It is an arithmetic number, because the mean of its divisors is an integer number (1045299128).

Almost surely, 2^3135897381 is an apocalyptic number.

It is an amenable number.

3135897381 is a deficient number, since it is larger than the sum of its proper divisors (1045299131).

3135897381 is a wasteful number, since it uses less digits than its factorization.

3135897381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045299130.

The product of its digits is 544320, while the sum is 48.

The square root of 3135897381 is about 55999.0837514329. The cubic root of 3135897381 is about 1463.7063180913.

The spelling of 3135897381 in words is "three billion, one hundred thirty-five million, eight hundred ninety-seven thousand, three hundred eighty-one".