31453450402 has 32 divisors (see below), whose sum is σ = 56046427200. Its totient is φ = 13077489600.

The previous prime is 31453450393. The next prime is 31453450409. The reversal of 31453450402 is 20405435413.

It is not an unprimeable number, because it can be changed into a prime (31453450409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285249 + ... + 1309492.

It is an arithmetic number, because the mean of its divisors is an integer number (1751450850).

Almost surely, 2^31453450402 is an apocalyptic number.

31453450402 is a deficient number, since it is larger than the sum of its proper divisors (24592976798).

31453450402 is a wasteful number, since it uses less digits than its factorization.

31453450402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594802.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 31453450402 its reverse (20405435413), we get a palindrome (51858885815).

The spelling of 31453450402 in words is "thirty-one billion, four hundred fifty-three million, four hundred fifty thousand, four hundred two".