2145031 has 8 divisors (see below), whose sum is σ = 2466464. Its totient is φ = 1827360.

The previous prime is 2145023. The next prime is 2145047. The reversal of 2145031 is 1305412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2145031 - 2³ = 2145023 is a prime.

It is a super-2 number, since 2×2145031² = 9202315981922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2144996 and 2145014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421 + ... + 2113.

It is an arithmetic number, because the mean of its divisors is an integer number (308308).

2^2145031 is an apocalyptic number.

2145031 is a deficient number, since it is larger than the sum of its proper divisors (321433).

2145031 is a wasteful number, since it uses less digits than its factorization.

2145031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2145031 is about 1464.5924347749. The cubic root of 2145031 is about 128.9667803009.

The spelling of 2145031 in words is "two million, one hundred forty-five thousand, thirty-one".