31402541 has 8 divisors (see below), whose sum is σ = 31726200. Its totient is φ = 31080960.

The previous prime is 31402487. The next prime is 31402543. The reversal of 31402541 is 14520413.

It can be written as a sum of positive squares in 4 ways, for example, as 10048900 + 21353641 = 3170^2 + 4621^2 .

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 31402541 - 2⁶ = 31402477 is a prime.

It is a super-2 number, since 2×31402541² = 1972239162513362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31402543) 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, 54905 + ... + 55473.

It is an arithmetic number, because the mean of its divisors is an integer number (3965775).

Almost surely, 2^31402541 is an apocalyptic number.

It is an amenable number.

31402541 is a deficient number, since it is larger than the sum of its proper divisors (323659).

31402541 is a wasteful number, since it uses less digits than its factorization.

31402541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 31402541 is about 5603.7970163096. The cubic root of 31402541 is about 315.4919364728.

Adding to 31402541 its reverse (14520413), we get a palindrome (45922954).

The spelling of 31402541 in words is "thirty-one million, four hundred two thousand, five hundred forty-one".