1672343531 has 4 divisors (see below), whose sum is σ = 1674519000. Its totient is φ = 1670168064.

The previous prime is 1672343521. The next prime is 1672343537. The reversal of 1672343531 is 1353432761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1353432761 = 383 ⋅3533767.

It is a cyclic number.

It is not a de Polignac number, because 1672343531 - 2¹⁸ = 1672081387 is a prime.

It is a super-2 number, since 2×1672343531² = 5593465771355095922, 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 = 1672343491 and 1672343500.

It is not an unprimeable number, because it can be changed into a prime (1672343537) 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, 1086581 + ... + 1088118.

It is an arithmetic number, because the mean of its divisors is an integer number (418629750).

Almost surely, 2^1672343531 is an apocalyptic number.

1672343531 is a deficient number, since it is larger than the sum of its proper divisors (2175469).

1672343531 is an equidigital number, since it uses as much as digits as its factorization.

1672343531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175468.

The product of its digits is 45360, while the sum is 35.

The square root of 1672343531 is about 40894.2970473879. The cubic root of 1672343531 is about 1186.9757094014.

Multiplying 1672343531 by its sum of digits (35), we get a palindrome (58532023585).

The spelling of 1672343531 in words is "one billion, six hundred seventy-two million, three hundred forty-three thousand, five hundred thirty-one".