31498001 has 4 divisors (see below), whose sum is σ = 31663104. Its totient is φ = 31332900.

The previous prime is 31497997. The next prime is 31498003. The reversal of 31498001 is 10089413.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10089413 = 59 ⋅171007.

It is a cyclic number.

It is not a de Polignac number, because 31498001 - 2² = 31497997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31498003) 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, 82265 + ... + 82646.

It is an arithmetic number, because the mean of its divisors is an integer number (7915776).

Almost surely, 2^31498001 is an apocalyptic number.

It is an amenable number.

31498001 is a deficient number, since it is larger than the sum of its proper divisors (165103).

31498001 is a wasteful number, since it uses less digits than its factorization.

31498001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165102.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 31498001 is about 5612.3079922613. The cubic root of 31498001 is about 315.8112991051.

The spelling of 31498001 in words is "thirty-one million, four hundred ninety-eight thousand, one".