1655073131 has 4 divisors (see below), whose sum is σ = 1752430392. Its totient is φ = 1557715872.

The previous prime is 1655073107. The next prime is 1655073137. The reversal of 1655073131 is 1313705561.

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 1655073131 - 2⁶ = 1655073067 is a prime.

It is a super-2 number, since 2×1655073131² = 5478534137916286322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655073137) 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, 48678605 + ... + 48678638.

It is an arithmetic number, because the mean of its divisors is an integer number (438107598).

Almost surely, 2^1655073131 is an apocalyptic number.

1655073131 is a deficient number, since it is larger than the sum of its proper divisors (97357261).

1655073131 is an equidigital number, since it uses as much as digits as its factorization.

1655073131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97357260.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 1655073131 is about 40682.5900232520. The cubic root of 1655073131 is about 1182.8755710249.

Adding to 1655073131 its reverse (1313705561), we get a palindrome (2968778692).

The spelling of 1655073131 in words is "one billion, six hundred fifty-five million, seventy-three thousand, one hundred thirty-one".